There are two ways to rename a Flex experience:
Renaming an Experience from the Ceros Admin
Hover over the target experience tile
Select the Options menu (...) in the bottom-right corner of the experience tile
Select Rename
In the window that appears, input the new experience name in the "Experience Name" field
Select Save
Renaming an Experience from the Flex Workspace
Navigate to the name bar in the top-left corner of the Flex workspace
Double-click on the current experience name
Input the desired new experience name
Press Enter on the keyboard
Alternatively, you can open the Experience settings Panel next to the name bar in the Flex workspace and rename the experience in the "Name" field of the General tab, then select Save.
Updates to an experience name will be reflected in the Admin and Flex workspace, regardless of where it is renamed.