When adding a new worker, this is the basic process:

1. Add the worker (following the instructions for the appropriate type of worker)
2. Attach the worker to the appropriate permit(s)
3. Add the worker's user login
4. Ensure that all needed permissions groups have been added and that all appropriate PIs are selected

When modifying which permits a worker is attached to or after converting a worker to PI (or the reverse), you must also go in the user manager and edit their permissions in that area.