Is there any way to trigger a process model when a change occurs to a user or group. When we say change, it may be like change and existing user or add new user, add new group, delete an existing group, add user to group, add group to group, etc.
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One way to do this is to create process models to manage users and / or groups that are exposed to empowered users. Then, since these things are already happening in a process, the process can call other processes (subprocesses) as needed.
Hope that helps!