In ARIS, there is a navigational menu, almost hidden, where players can tab between different parts of their game. The layout of this navigation area is very customizable by authors. The general idea is that you can turn on and off the default tabs, create new tabs from ARIS objects (i.e. plaques, conversations, etc.), and—especially—remove tabs you don't need, making things straightforward for your players.
This is done in the Editor via Game > Tabs