when employee have a user role “shop manager” to manage woocommerce. They cant use WPERP because wperp needs another user role. In WP setting, user can only select 1 user role.
The user role can have the ‘Shop Manager’ but what do you like to have this user access for? In CRM or Accounting? You can set ERP permission to any user from their profile. Ref: https://prnt.sc/s3s28y