It's not uncommon for cloud architecture to contain multiple production environments, multiple test environments belonging to different teams and projects.
To make it easy to find the environments you are currently working on, you have the ability to pin them to the top of the environment dashboard.
It the bottom right of the environment tile, there is a star icon. Selecting this will toggle the pin function on and off.
Pinned environments are saved at browser level, so different team members using the same Hava log in credentials can see their own set of pinned environments.