This is a technical software question - is there a way I can manually adjust my disability amount deduction on line 316 so i can split it with my father?

If you are transferring any of your Disability Tax Credit (DTC) to your father, you do not need to adjust the amount on Line 316 of your own tax return. When you qualify for the DTC, the full amount will always show on this line.

When your father completes his tax return and enters your information and net income found on your completed tax return, the correct amount of the transfer will be calculated on his return.