Look for 1120-H https://proconnect.intuit.com/supported-tax-forms/?forms=pspro

It has been quite a while, but I remember correctly, you start it as a 1120.  Then there is a check box that changes it to an "H".

Yep, its a checkbox on the 1120.

You choose the 1120-H from the 1120 return.  There is a check box in the information worksheet to choose the 1120-H. If is just below the name and address section.

Is Proseries able to file 1120-H electronically?

In earlier years no, could not e-file 1120 H in Pro Series. Not sure about 2024. Maybe someone will jump in that knows for sure

You open up the return for a Corporation 1120.  In the Corporation Information just below the Company info part 1 there is part II.  Type of Return.  Choose the Prepare Form 1120-H

Dick Schmidt EA

Form 1120-H has to be paper filed.  Can't be e-filed

I was able to successfully efile an extension for an 1120H via ProSeries for the 2024 tax year even though I was told that was not available. Haven't tried the actual return yet, however.

Yes! I filed all 10 HOAs I do, electronically. 

In previous years, you could not.  In 2024 you can.