How to handle Box 20 and/or 48 of T4A

T4A box 20 is linked to the first Commission income linked to line 139. You need to double click on line 139, add T2125(1) to access the first commission income.
T4A box 48 in linked to the first business income T2125(1) linked to line 135. Again, you need to double click on line 135, add T2125(1) to access the form.
Complete T2125 form using the info described in the business guide .