You can rename dashboards in two different ways:
Rename in the list view
To rename your dashboard, find the dashboard you want to rename and click on the three dots to the right of the name. This will bring up a sub-menu where you can select 'Rename':
From here you can type in your new dashboard name and save using the green tick:
2. Rename in the Sidebar
To access the sidebar, click on the 'Bright Analytics' logo in the top left of the page to bring out the side menu. Locate your dashboard and click on the three dots.
This should bring out a sub-menu where you can select 'Rename'
You can then type in your new name and hit 'Enter' button on your keyboard to save your new name: