diff --git a/src/server/BreCal/impl/shipcalls.py b/src/server/BreCal/impl/shipcalls.py
index 994d5ce..587e321 100644
--- a/src/server/BreCal/impl/shipcalls.py
+++ b/src/server/BreCal/impl/shipcalls.py
@@ -79,6 +79,11 @@ def PostShipcalls(schemaModel):
         commands.execute(query, schemaModel)
         new_id = commands.execute_scalar("select last_insert_id()")
 
+        # add participant assignments
+        pquery = "INSERT INTO shipcall_participant_map (shipcall_id, participant_id) VALUES (?shipcall_id?, ?participant_id?)"
+        for participant_id in schemaModel["participants"]:
+            commands.execute(pquery, param={"shipcall_id" : new_id, "participant_id" : participant_id})
+
         pooledConnection.close()
 
         return json.dumps({"id" : new_id}), 201, {'Content-Type': 'application/json; charset=utf-8'}
@@ -116,9 +121,16 @@ def PutShipcalls(schemaModel):
             query += key + " = ?" + key + "? "
 
         query += "WHERE id = ?id?"
-
         affected_rows = commands.execute(query, param=schemaModel)
 
+        pquery = "SELECT id, participant_id FROM shipcall_participant_map where shipcall_id = ?id?"
+        pdata = commands.query(pquery,param={"id" : schemaModel.id})
+
+        # loop across passed participant ids, creating entries for those not present in pdata
+
+        # loop across existing pdata entries, deleting those not present in participant list
+        
+
         pooledConnection.close()
 
         if affected_rows == 1:
diff --git a/src/server/BreCal/schemas/model.py b/src/server/BreCal/schemas/model.py
index 1000f4f..079954f 100644
--- a/src/server/BreCal/schemas/model.py
+++ b/src/server/BreCal/schemas/model.py
@@ -79,6 +79,7 @@ class ShipcallSchema(Schema):
     tidal_window_to = fields.DateTime()
     rain_sensitive_cargo = fields.Bool()
     recommended_tugs = fields.Int()
+    participants = fields.List(fields.Int)
     created = fields.DateTime()
     modified = fields.DateTime()
 
diff --git a/src/server/requirements.txt b/src/server/requirements.txt
index deb29e9..ca817e1 100644
--- a/src/server/requirements.txt
+++ b/src/server/requirements.txt
@@ -6,4 +6,8 @@ MarkupSafe==1.1.1
 marshmallow==3.9.1
 webargs==6.1.1
 Werkzeug==1.0.1
-pydapper[mysql-connector-python]
\ No newline at end of file
+pydapper[mysql-connector-python]
+marshmallow-dataclass
+bcrypt
+jwt
+flask-jwt-extended
\ No newline at end of file