Why when I select the medical expenses to be applied to my tax return does it keep applying the expenses to my spouse?

[Gibby2]

I need to apply medical expenses to my tax return so that it is applied before I get a refund of my credit due from my Alternative Minimum Tax balance.

[TurboTaxSusan]

Here is how to override the optimization to claim medical expenses on you and your spouse's tax returns: https://turbotax.community.intuit.ca/replies/2647641

[sls2]

Turbo tax does not allow override even though it is calculated...it is in black

[sls2]

I need to use my partner's income to calculate the medical amount which will be reported on my return because he has no tax payable.