This mainly depends on the type of SupLogin subscription you purchased and your computer's configuration.
For example, the free version allows up to 10 browsers to be opened simultaneously. In the base version, the more browsers you purchase, the more browsers you can open. At the same time, the number of browsers you can open also depends on your computer's configuration – the higher the configuration, the more browsers you can run.

If you have purchased a large number of browsers but your computer's configuration is insufficient, you can add user accounts and use those accounts to log in on other computers.