Modifying permissions for Allow auto-posting inventory adjustment journal

[ViktorVu602]

I am having a customer trying to do an extension on worker permission. In particular, they noticed that there is a switch on the POS permission called “Allow auto-posting inventory adjustment journal” that allows inventory adjustment journal created on POS to be automatically posted after being submitted to HQ and they would like to disable it.
The issue is that, for workers with manager privileges, this switch cannot be disabled as the manager privilege will automatically enable it.
With that in mind, customer is looking for input to do an extension that allow this switch to be disabled even when manager privilege is enabled.
On TEK CSS team, we have tried to guide customer to modify the ModifiedField or the honorManagerPrivileges so that the Manager Privilege switch no longer modify the “Allow auto-posting inventory adjustment journal” but that has not worked out for customer.

Question: May I ask if we can have some input to achieve this extension for customer?