diff --git a/workflow/engine/classes/model/BpmnParticipant.php b/workflow/engine/classes/model/BpmnParticipant.php
index 751baa018..b74b2245e 100644
--- a/workflow/engine/classes/model/BpmnParticipant.php
+++ b/workflow/engine/classes/model/BpmnParticipant.php
@@ -14,6 +14,163 @@ require_once 'classes/model/om/BaseBpmnParticipant.php';
  *
  * @package    classes.model
  */
-class BpmnParticipant extends BaseBpmnParticipant {
+class BpmnParticipant extends BaseBpmnParticipant
+{
+    private $bound;
 
+    public function __construct($generateUid = true)
+    {
+        $this->bound = new BpmnBound();
+        $this->setBoundDefaults();
+    }
+
+    public function getBound()
+    {
+        return $this->bound;
+    }
+
+    private function setBoundDefaults()
+    {
+        $this->bound->setBouElementType(lcfirst(str_replace(__NAMESPACE__, '', __CLASS__)));
+        $this->bound->setBouElement('pm_canvas');
+        $this->bound->setBouContainer('bpmnDiagram');
+
+        $this->bound->setPrjUid($this->getPrjUid());
+        $this->bound->setElementUid($this->getParUid());
+
+        $process = BpmnProcessPeer::retrieveByPK($this->getProUid());
+
+        if (is_object($process)) {
+            $this->bound->setDiaUid($process->getDiaUid());
+        }
+    }
+
+    public static function findOneBy($field, $value)
+    {
+        $rows = self::findAllBy($field, $value);
+
+        return empty($rows) ? null : $rows[0];
+    }
+
+    public static function findAllBy($field, $value)
+    {
+        $c = new Criteria('workflow');
+        $c->add($field, $value, Criteria::EQUAL);
+
+        return BpmnParticipantPeer::doSelect($c);
+    }
+
+    public static function getAll($prjUid = null, $start = null, $limit = null, $filter = '', $changeCaseTo = CASE_UPPER)
+    {
+        $c = new Criteria('workflow');
+        $c->addSelectColumn("BPMN_PARTICIPANT.*");
+        $c->addSelectColumn("BPMN_BOUND.*");
+        $c->addJoin(BpmnParticipantPeer::PAR_UID, BpmnBoundPeer::ELEMENT_UID, Criteria::LEFT_JOIN);
+
+        if (! is_null($prjUid)) {
+            $c->add(BpmnParticipantPeer::PRJ_UID, $prjUid, Criteria::EQUAL);
+        }
+
+        $rs = BpmnParticipantPeer::doSelectRS($c);
+        $rs->setFetchmode(\ResultSet::FETCHMODE_ASSOC);
+
+        $participants = array();
+
+        while ($rs->next()) {
+            $participants[] = $changeCaseTo !== CASE_UPPER ? array_change_key_case($rs->getRow(), CASE_LOWER) : $rs->getRow();
+        }
+
+        return $participants;
+    }
+
+    // OVERRIDES
+
+    public function setParUid($actUid)
+    {
+        parent::setParUid($actUid);
+        $this->bound->setElementUid($this->getParUid());
+    }
+
+    public function setPrjUid($prjUid)
+    {
+        parent::setPrjUid($prjUid);
+        $this->bound->setPrjUid($this->getPrjUid());
+    }
+
+    public function setProUid($proUid)
+    {
+        parent::setProUid($proUid);
+
+        $process = BpmnProcessPeer::retrieveByPK($this->getProUid());
+        $this->bound->setDiaUid($process->getDiaUid());
+    }
+
+    public function save($con = null)
+    {
+        parent::save($con);
+
+        $this->setBoundDefaults();
+
+        if ($this->bound->getBouUid() == "") {
+            $this->bound->setBouUid(\ProcessMaker\Util\Common::generateUID());
+        }
+
+        $this->bound->save($con);
+    }
+
+    public function delete($con = null)
+    {
+        // first, delete the related bound object
+        if (! is_object($this->bound) || $this->bound->getBouUid() == "") {
+            $this->bound = BpmnBound::findByElement('Participant', $this->getParUid());
+        }
+
+        if (is_object($this->bound)) {
+            $this->bound->delete($con);
+        }
+
+        parent::delete($con);
+    }
+
+    public function fromArray($data, $type = BasePeer::TYPE_FIELDNAME)
+    {
+        parent::fromArray($data, $type);
+
+        $bound = BpmnBound::findByElement('Participant', $this->getParUid());
+
+        if (is_object($bound)) {
+            $this->bound = $bound;
+        } else {
+            $this->bound = new BpmnBound();
+            $this->bound->setBouUid(ProcessMaker\Util\Common::generateUID());
+        }
+
+        $this->bound->fromArray($data, BasePeer::TYPE_FIELDNAME);
+    }
+
+    public function toArray($type = BasePeer::TYPE_FIELDNAME)
+    {
+        $data = parent::toArray($type);
+        $bouUid = $this->bound->getBouUid();
+
+        if (empty($bouUid)) {
+            $bound = BpmnBound::findByElement('Participant', $this->getParUid());
+
+            if (is_object($bound)) {
+                $this->bound = $bound;
+            }
+        }
+
+        $data = array_merge($data, $this->bound->toArray($type));
+
+        return $data;
+    }
+
+    public static function exists($actUid)
+    {
+        $c = new Criteria("workflow");
+        $c->add(BpmnParticipantPeer::PAR_UID, $actUid);
+
+        return BpmnParticipantPeer::doCount($c) > 0 ? true : false;
+    }
 } // BpmnParticipant
diff --git a/workflow/engine/src/ProcessMaker/Project/Adapter/BpmnWorkflow.php b/workflow/engine/src/ProcessMaker/Project/Adapter/BpmnWorkflow.php
index 6dbdb462b..6aaa0ce29 100644
--- a/workflow/engine/src/ProcessMaker/Project/Adapter/BpmnWorkflow.php
+++ b/workflow/engine/src/ProcessMaker/Project/Adapter/BpmnWorkflow.php
@@ -673,6 +673,7 @@ class BpmnWorkflow extends Project\Bpmn
             $diagram["laneset"] = $bwp->getLanesets($configList);
             $diagram["lanes"] = $bwp->getLanes($configList);
             $diagram["data"] = $bwp->getDataCollection($configList);
+            $diagram["participants"] = $bwp->getParticipants($configList);
             $project["diagrams"][] = $diagram;
         }
 
@@ -962,6 +963,53 @@ class BpmnWorkflow extends Project\Bpmn
             }
         }
 
+        ////
+        /*
+         * Diagram's Participant Handling
+         */
+        $whiteList = array();
+        foreach ($diagram["participants"] as $i => $participantData) {
+            $participantData = array_change_key_case($participantData, CASE_UPPER);
+            unset($participantData["_EXTENDED"]);
+
+            $dataObject = $bwp->getParticipant($participantData["PAR_UID"]);
+
+            if ($forceInsert || is_null($dataObject)) {
+                if ($generateUid) {
+                    //Event
+                    unset($participantData["BOU_UID"]);
+
+                    $uidOld = $participantData["PAR_UID"];
+                    $participantData["PAR_UID"] = Util\Common::generateUID();
+
+                    $result[] = array(
+                        "object"  => "participant",
+                        "old_uid" => $uidOld,
+                        "new_uid" => $participantData["PAR_UID"]
+                    );
+                }
+
+                $bwp->addParticipant($participantData);
+            } elseif (! $bwp->isEquals($dataObject, $participantData)) {
+                $bwp->updateParticipant($participantData["PAR_UID"], $participantData);
+            } else {
+                Util\Logger::log("Update Participant ({$participantData["PAR_UID"]}) Skipped - No changes required");
+            }
+
+            $diagram["participant"][$i] = $participantData;
+            $whiteList[] = $participantData["PAR_UID"];
+        }
+
+        $dataCollection = $bwp->getParticipants();
+
+        // looking for removed elements
+        foreach ($dataCollection as $participantData) {
+            if (! in_array($participantData["PAR_UID"], $whiteList)) {
+                // If it is not in the white list, then remove them
+                $bwp->removeParticipant($participantData["PAR_UID"]);
+            }
+        }
+
 
         /*
          * Diagram's Flows Handling
diff --git a/workflow/engine/src/ProcessMaker/Project/Bpmn.php b/workflow/engine/src/ProcessMaker/Project/Bpmn.php
index bd509d72e..394d50a7a 100644
--- a/workflow/engine/src/ProcessMaker/Project/Bpmn.php
+++ b/workflow/engine/src/ProcessMaker/Project/Bpmn.php
@@ -24,6 +24,8 @@ use \BpmnEventPeer as EventPeer;
 use \BpmnGatewayPeer as GatewayPeer;
 use \BpmnFlowPeer as FlowPeer;
 use \BpmnArtifactPeer as ArtifactPeer;
+use \BpmnParticipant as Participant;
+use \BpmnParticipantPeer as ParticipantPeer;
 
 use \BasePeer;
 
@@ -73,6 +75,7 @@ class Bpmn extends Handler
         ),
         "flow" => array("PRJ_UID", "DIA_UID", "FLO_ELEMENT_DEST_PORT", "FLO_ELEMENT_ORIGIN_PORT"),
         "data" => array("PRJ_UID"),
+        "participant" => array("PRJ_UID"),
     );
 
 
@@ -872,6 +875,87 @@ class Bpmn extends Handler
     }
     //////2222
 
+    public function addParticipant($data)
+    {
+        // setting defaults
+        $data['PAR_UID'] = array_key_exists('PAR_UID', $data) ? $data['PAR_UID'] : Common::generateUID();
+        try {
+            self::log("Add Participant with data: ", $data);
+            $participant = new Participant();
+            $participant->fromArray($data, BasePeer::TYPE_FIELDNAME);
+            $participant->setPrjUid($this->getUid());
+            $participant->setProUid($this->getProcess("object")->getProUid());
+            $participant->save();
+            self::log("Add Participant Success!");
+        } catch (\Exception $e) {
+            self::log("Exception: ", $e->getMessage(), "Trace: ", $e->getTraceAsString());
+            throw $e;
+        }
+
+        return $participant->getParUid();
+    }
+
+    public function updateParticipant($parUid, $data)
+    {
+        try {
+            self::log("Update Participant: $parUid", "With data: ", $data);
+
+            $participant = ParticipantPeer::retrieveByPk($parUid);
+
+            $participant->fromArray($data);
+            $participant->save();
+
+            self::log("Update Participant Success!");
+        } catch (\Exception $e) {
+            self::log("Exception: ", $e->getMessage(), "Trace: ", $e->getTraceAsString());
+            throw $e;
+        }
+    }
+
+    public function getParticipant($parUid, $retType = 'array')
+    {
+        $participant = ParticipantPeer::retrieveByPK($parUid);
+
+        if ($retType != "object" && ! empty($participant)) {
+            $participant = $participant->toArray();
+            $participant = self::filterArrayKeys($participant, self::$excludeFields["participant"]);
+        }
+
+        return $participant;
+    }
+
+    public function getParticipants($start = null, $limit = null, $filter = '', $changeCaseTo = CASE_UPPER)
+    {
+        if (is_array($start)) {
+            extract($start);
+        }
+
+        $filter = $changeCaseTo != CASE_UPPER ? array_map("strtolower", self::$excludeFields["participant"]) : self::$excludeFields["participant"];
+
+        return self::filterCollectionArrayKeys(
+            Participant::getAll($this->getUid(), $start, $limit, $filter, $changeCaseTo),
+            $filter
+        );
+    }
+
+    public function removeParticipant($parUid)
+    {
+        try {
+            self::log("Remove Participant: $parUid");
+
+            $participant = ParticipantPeer::retrieveByPK($parUid);
+            $participant->delete();
+
+            // remove related object (flows)
+            Flow::removeAllRelated($parUid);
+
+            self::log("Remove Participant Success!");
+        } catch (\Exception $e) {
+            self::log("Exception: ", $e->getMessage(), "Trace: ", $e->getTraceAsString());
+            throw $e;
+        }
+    }
+
     public function addLane($data)
     {
         // TODO: Implement update() method.