Playing Experiences on Xbox You can play all of the available experiences on Roblox cross-platform with your friends even while they're playing on PC, Mac, or a mobile device. You can even see your online Xbox friends from the Friends tab in Xbox and create a party to play with them.
For adding friends on Roblox Xbox One from PC, go to settings > Account from your Xbox Device and Enable Cross-Platform Play. Remember to link your console Microsoft account with your PC. Then switch to your PC and login with that same account, and add friends using their username.
Enter your Username and Password. Link your Xbox Account to Roblox as described below....To play Roblox games on your PC or Mac you need to install the Roblox software:Click a game you want to play.Click the Play icon.Click to Install Roblox and run the installer when prompted.Your game will start.
Unfortunately, you can't add friends without an account, so you'll have to create one or log in. Click ≡, or the 3 bars symbol on the side menu bar. Click 'People. ' That'll lead you to the menu where you can search for people.