Use multiple Roblox accounts
Open Roblox from separate browser profiles
Use different browsers for each instance
Launch Roblox from the Microsoft Store app and the website at the same time
Use a virtual machine for another instance
Use Windows Sandbox for an additional instance
Duplicate the Roblox app folder and run separate copies if possible
Use a multi-instance tool if it is allowed on your system
Make sure each instance is signed into a different account
Close unnecessary background apps to reduce lag
Check Roblox and device terms before using multiple instances