I can't see an option for a rucking activity on my Fenix 8...how do I get it on my watch?

Just picked up a Fenix 8 AMOLED 51mm and was surprised to see that rucking isn't on it, though I'm pretty sure the website called that out specifically.  I signed up for the Beta program as someone said it might not be released yet, but that hasn't helped.

A lot of my runs currently involve a 20lb weight vest and I'd like to mark that in the rucking activity.

Anybody know how to get it on there?