Citrix : Multiple Instances

Using Citrix To Create Multiple Instances At Client Terminal Of MSAccess Project (ADP) & SQL BackEnd Residing On The Server.

I am interested in setting up the whole MSAccess Project & SQL BackEnd on the Server SoThat Through CITRIX the client terminals only get multiple instances of the MSAccess Project.
At the moment, the very first computer can open an instance (first instance). When another computer tries to get an instance (2nd instance) a message appears informing that the MS Access Project is already open and cannot be opened again.