Block users from editing the Bank Account definition main page but not the Services Tab.

There are 4 tabs in the Bank def screen. Main, Payments, Services and Signature Rules. I need to be able to grant users access to the Main tab at the view level only. They should be able to open a bank def Main page but not be able to edit that page. The same with the other tabs. I need to be able to control which tabs each user can access and edit or view.