How to allow / deny a User permission to edit items on the Offer and Billing tab
Open the Users window

1: Click Admin from the Menu.
2: Select Users —> Users from the drop down list – the Users window will open.
Select the User

1: Select the required User from the list.
2: Click Edit – the Edit User window will open.
Change the Permission

1: Select the Permissions tab – the Permissions window will open.
2: Open the General list.
3: Tick the “Allow Editing Of Offer And Billing” tick box to allow the User to Edit.
4: Click OK to Save the data and close the window.