Can I password protect a particular button?

Site URL: https://www.charlottenorthlacrosse.com

I would like to password protect a button for a certain event to be listed on the above website.

The event will only we open to a certain group initially (to whom we would give the button password).  With the password, the button would let them use the embedded registration link.

If the event is not sold out, we'll remove the button password, and the public can then use the embedded registration link.

We would only password protect one button on a page that lists multiple events (each with working registration buttons).

If it's possible to password protect a particular button, please explain how.

Thanks.

Thanks for the quick and helpful reply.   Appreciate knowing the button idea doesn't work, and the suggestion of a password-protected page.  We'll consider that in the future.

Thanks again.