You can use the Find tool in the top right to search for Employment Expenses. Select it from the list, and click Go. This will bring you to the part of the interview that deals with the T777.
I searched the Employment Expenses form, indicated that it applies to me, checked "Other Employment Expenses" on the Employment Expense Profile page and clicked Continue - and nothing happened. No further instructions, no where to enter the expenses, nothing. Is there something I've missed?