Added methods for adding and removing positions for a given employee.

SchedulerApp/src/main/java/com/example/schedulerapp/Model.java

@@ -28,9 +28,9 @@ public class Model {
             date = LocalDate.now();
         }
         isManager = false;          // changes if manager logs in
-        this.shifts =  new HashMap<Integer, Shift>();
-        this.employees = new HashMap<Integer, Employee>();
-        this.timeOff = new HashMap<Integer, TimeOff>();
+        this.shifts =  new HashMap<>();
+        this.employees = new HashMap<>();
+        this.timeOff = new HashMap<>();
         try {
             InetAddress ip = InetAddress.getByName(hostname);
             this.socket = new Socket(ip, port);
@@ -262,15 +262,12 @@ public class Model {
         return shifts;
     }
 
-
-    //todo
     void addPosition(int employeeID, String position) {
-        writer.println();
+        writer.println("addPosition/" + employeeID + "/" + position);
     }
 
-    //todo
     void removePosition(int employeeID, String position) {
-        writer.println();
+        writer.println("removePosition/" + employeeID + "/" + position);
     }