Refer to this Citrix article.
Connect a second mouse to the device and do not include it among the USB redirect devices. In this way, the pointer of the mouse will be draw properly on the VM.
Activate the use of the mouse from Bloc Num.
Redirect the mouse 3DConnexion CadMouse Compact in session (pointer not visible), press the keys: Alt sx + Shift sx + Bloc Num.