Option 1 – Directly on the map
To rename a map, go to the area-management panel on the left of your screen. Double-click on the name of the map to change it:
Option 2 – From the maps panel
Go to the card panel from the little character icon at the top right of your screen
You can hover your mouse next to the title of the card you want to rename: a pencil icon appears. Modify your title, press enter, and you’re done!
To go further: