On a day trip last week, my watch7 picked up a "Favorite Location" for weather.  After I returned home, the new location stuck, which is incorrect for my home area.  I tap "Manage on Phone" on the watch face, and it  tells me to add a location on my phone.  But how do I do that?  In the Galaxy Wearable app?  I don't see how to do that.

I have the apps installed on my Pixel 6a.

EDIT:  I should add, I did nothing to set any location anywhere, other than just wearing the watch.  The watch did that all by itself.