usability – What is the best way to represent editable options that change the viewport?

I am trying to figure out how what the best approach UI/UX wise is for the behavior I desire. I have a dashboard with a sidebar on the left, and all of the behavior I am describing happens on one page, so the sidebar is essentially static for my problem.

I’ve made a very rough draft of what the app will look like, essentially the dashboard will have a way to move between different galleries. The current selected gallery is represented by the grid at the bottom with the big “+”. The way to move between views will be in the area represented by “???”. Behavior-wise, what I want is very similar to tabs in that I would like the user to be able to select an option and the option that is selected will change the gallery that is being displayed. However, I would like the various options to be editable in that I would like them to be able to be renamed and deleted, with potential support for reordering.

What would be the best approach for this?

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