Enabling activity-chaining between all nodes on the main process model ensures the wizard steps flow seamlessly for the user.
Using a subprocess to call the second process model allows the main process to incorporate its user input task as part of the wizard flow with activity-chaining support.

Chosen snippet uses the difference() function to efficiently get all account managers who are not currently managers of any customer account. It directly compares local!accountManagers to local!customers.manager, resulting in a concise and optimal solution for retrieving account managers without an active customer account.