Deauthorizing Old Computers from iTunes

I'm not seeing a way to deauthorize old computers for iTunes. I can only find

Account

Authorizations

Deauthorize This Computer

No option to deauthorize other computers. I have some old PCs that I no longer use and want to deauthorize. Went I authorized my new Mac it indicated that I have 5 of 5 computer authorizations assigned.

I don't want to be unable to authorize other computers when needed. All the online help I can find show example processes that I can't execute. I don't see a Deauthorize All Computers options. I don't see a deauthorize option on my Account Settings screen.

Seems the advice online is not current with the up to date version of iTunes. I do not have an Apple Music subscription nor do I want one. I continue to purchase my music via the iTunes Store. I bring that up in case it is somehow relevant to my problem.