When you have joined an event while skipping the create/join event option, you can still join a team later on.
First, open the Personalize Event screen from the (...)-menu on the results card.
On the Personalize Event screen you can see your connection status.
Click Join a Team to open the team selection dialog:
Now select your team (or type to filter) and press Confirm to join the selected team.
You will now see a message you are member of the team you have selected:
