How can I add a new gallery section to the RIDE theme?

Store Design
1

Hi Everyone,

I’m trying to add a new section in the RIDE theme for a simple gallery section.

My pathway is Edit code: - Sections folder / add a new section

It wont allow me to add a new section. In fact it wont allow me to add any new templates/sections/assets .etc

do I need to allow this some how?

Thank in advance