Limited options for personalizing multi sport sessions on Apple Watch 10

Hi, I just tried creating a multisport session on my Apple Watch 10, starting with indoor swimming, then aqua gym. I like to alternate between the two, doing mostly laps. But I see that once I've added swimming, aqua gym doesn't show up in the list of options I can add. So I'm putting this in the suggestion box for the next iWatch update

[Re-Titled by Moderator]