Can I disable the + Section button in the sidebar for non-admins?

[Arkshine]

Creating a theme component is the way to go!

1. Go to Customize → Themes

2. Click on the Install button.
   

   

3. Select + Create New

4. Enter a name and validate.

5. Now, you can include your component in the Air Theme, and you can Edit CSS/HTML!

I hope that helps!