Where do I see the audiences I created in Meta? Do they appear in Ads Manager?
Yes. All audiences are created directly in your Meta ad account, just as if you had created them by hand. The Ads Editor progress panel has a See Audiences in Meta button, which opens the Audiences section of Meta Ads Manager already filtered to the selected account. One normal Meta behavior to keep in mind: newly created audiences take a few hours to populate, so right after creation the size may show as unavailable or below 1,000. This isn't an error. Just wait for it to fill in.