The first part of the ZENSIE side bar provides access to the main functionality of the dashboard:
Dashboard: access to customizable dashboards.
Sensors: access to the list of sensors.
Sensors shared with me: all the hardware endpoints that you have access to.
Explore: visualize data in a graph and compare different sensor values.
Notifications: see all the notifications in your organization and create new ones.
Export: export your data.
Account Settings: access to user profile information.
Documentation: all the FAQ regarding ZENSIE
The second part of the side bar shows all the groups you belong too.
The third part of the side bare shows the organizations that you belong to. For example here, I belong to the organization 30MHz.