This article explains how to add multiple accounts to an Oculus Quest 2.

With the multi-user account feature, Meta allows you to add up to three additional accounts on top of the original admin account. You can add and remove these accounts freely, so you don't have to worry about getting stuck or exceeding a limit.

Here's how to add a second, third, or even fourth account to your Quest 2:

Select Settings (gear icon) from the main navigation bar.