If you are interested in adding more than one account to Roblox, you can use the Roblox Multi Accounts Extension. The extension works like a friends list on Steam, showing you who is active and idle on Roblox. It also lets you join ongoing game sessions. Adding multiple accounts can be useful if you want to play with multiple people or use an account as an alt.
There are some precautions you need to take when using Roblox extension. First, make sure to be careful when joining a server. Do not use illegal scripts and avoid cheating in Roblox. Otherwise, you’ll encounter error code 267. Moreover, you must make sure that your internet connection is not slow and that your antivirus and firewall are not blocking the Roblox game server.