While I was Zwifting yesterday, a friend logged in. He wanted to drop in and ride with me. Is is possible to drop in on someones during their ride using Zwift or ZML?
If your friend is following you in the Zwift software, when they set up their ride, you should appear at the top of the list of riders available to “ride with” (JOIN ANOTHER ZWIFTER). Your friend selects you, starts to ride, and they’ll be with you on course, with some inertia to get them started at speed.
You may find http://www.zwiftgps.com/ useful if you want to s̶t̶a̶l̶k̶ meet another rider while already in a session.