Trying to create alignment pins and holes for split body

I split the body and created pins per instructions and made sure pins were separated bodies. When I select the face to create the holes for the pins on the other half of the body, then select the pin, I don’t get a “Done” icon to commit the change and create the hole for the alignment pin. What am I doing wrong ?

Don’t select the face, select the split bodies themselves to subtract the pins.

Do you know if there are tutors I can pay to teach how to do this? I just cannot seem to get this to work.

You can write me in DM and I’ll make a video for you.