@aya lea If you are not splitting your T5 with a spouse, TurboTax can't "see" other returns (parents, siblings, children, etc..). So you have to claim 100%, then manually split the amounts from the T5.

Thank you for using TurboTax.

so i have to override the percentage on the form , righ?

Thank you 

@aya lea No. You are claiming a percentage of 100%. But you adjust the amounts you enter in the boxes so that you are only claiming your percentage. If you and your father are splitting $1000 50/50, then you only put in $500.