Which line are you trying to edit?

8810 - Line 7 and 9945 - Line 16

To enter an amount in 8810 - Line 7, use the boxes that are just to the left of it.

9945 is a calculated field so you can't type anything directly into that spot. It's the total of the Line 16 chart on page 3 of the T777, which is in the middle of the form.

That works!

Thank you. Appreciate your time.