You can manage which of their plans your client can see in VoyantGo by opening the client case in AdviserGo, clicking the client menu (top-right) and clicking Manage Access.
Set the what if scenarios as Read or Hidden as required then click the Done button, top-right, to save your changes:
Tip: Giving your client Read access makes the what if visible in VoyantGo on a read-only basis. The client can make a copy of the plan if they want to edit it. This is done by clicking 'Create a Copy' on the read-only banner message.