As long as your friend has their own UDisc account, adding them to a scorecard can be done in one of two ways.
Anyone in your group can keep score on their own phone, and scores update instantly for everyone across all devices.
Open the UDisc App and go to More -> Cardmates. Tap the icon in the top right to Add New Player.
While creating a new scorecard, after selecting the course and layout, tap the icon in the top right to Add New Player.
Create New Player will allow you to create a local player on your device. This player will not link to any existing UDisc account, and will only appear on your device. (Encourage your friend to sign up for their own free UDisc account so they can begin tracking their rounds now!)
Find Nearby Players will bring up the Friend Lobby. This uses bluetooth to show nearby players in the Friend Lobby. Have your friend join the lobby by opening the UDisc App and going to the You tab, then clicking on the Friend Lobby button. (To the right underneath username.) Once they do so, you will see them appear on your device and you can add them as a friend.
Find by username or PDGA # will provide you with a search box. Here you can search for your friend using their UDisc username, or PDGA #.
To find a player using their PDGA number, they must have previously linked it to their UDisc account.
Need more help? Check out the UDisc Landing Zone here for tips from fellow disc golfers or reach out to us via chat or at help@udisc.com.