Once an Invoice or Return Authorizations (Credit Memo) is found and selected, double-click it in the grid to open it in remote/view only mode, no changes can be made here.

 

Or you can right-click an invoice or return authorization to open the edit / view options menu and make a selection.

 

The Invoice will open in the Change Invoice screen in remote/view only mode. You can view Billing Detail, Acct. Inquiry, Comments and Prior Sales information from this invoice screen.