How do I add an additional Mac?

Here is a screenshot of the My Account page for my account. It says "For 1 Computer". I assume I must purchase permission to use Parallels on a second Mac. However, I don't see anywhere on the website where I can purchase additional permission. I only see where I can purchase an additional subscription license at full price. Am I correct? If I'm incorrect, please point me in the right direction. Paying a single monthly full subscription for each of my many Macs does not sound great. Surely I'm overlooking something. In fact, I remember years ago, I did purchase some sort of license that allowed me to use Parallels within numerous computers and it was not a business license.

 

Oh, I posted in this section because I need to add an M1 machine. I'm currently using an Intel-based Mac and will need Parallels on both.