In the HMI settings, you can configure the focus of each HMI instance separately, meaning this will be the root node in the HMI tree:
As it is only possible to select one root node for the HMI here, this requires a change to the topology, though. You would need to introduce an extra ModeForwarder combining Module 1 and 2. As far as I understand, you do not need an HMI instance that displays all three modules. Otherwise, the changed hierarchy would be unexpected, there.
Another limitation of this approach is that you will not see the views configured at the Station level, anywhere. This means that you have to move them to Fu1and2 and/or to Fu3. For some views like the Ethercat diagnosis, it is impossible to duplicate them (You can only have one EtherCAT Master Add-on), so they will only be available at one of the two HMI panels.
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