If you receive the error Payment Type is required when on the Bank Details stage of adding a new employment, you will need to make sure that you have the correct permissions to add this.
Permissions needed
Include the permissions below on the System Owner role:
Click Setup, then click Roles & Permissions.
Click System Owner, then select the Role Permissions tab.
Click Edit Permissions.
Search for the permissions below and enable both the view and edit permissions:
Bank Account Details
Payment Method Primary
Payment Method Secondary
Click Save.
Include the field
If you've added the permissions but you still can't add bank details, follow the steps below:
Go to Setup and click Settings.
Click Field Settings.
Search for Tab-NewStarter-Bank and click it.
Tick the Include box.
Click Save.