partly locking of application in IQAN design

Hello!

we have a costumer, which would like to make an CAN-Interface for different trucks by himself.

We would like to allow this only, if we can lock in our application all things, except CAN-Interface Module for Truck.

I have tried to make some locks in the application, but this is not possible as I needed. For example I cannot lock the Menu.

Is there a possibility to lock everything, except one software module?
If not, can you program something for us?