If you are connected to a PMS, Room Types can only be modified in the PMS. Once updates are made, an Admin user can sync the Room Types in Event Temple:
Click on Settings
Select Integrations
Click on PMS
Scroll to Sync
Click Sync Room Types
How Do I Update Room Types From Mews?
Update room types - Change the name of a room type synced with Mews
Written by Rachel Baque