Is there a way to renumber art boards in Affinity Designer

[LeviA]

I have deleted art boards on a given document. Is there a way to automatically/manually renumber them to reflect the changes?

For instance. If I have Art Board 1, Art Board 2, Art Board 3, and Art Board 4...if I delete Art Boards 1 and 4...is it possible to renumber Art Board 2 as Art Board 1...and Art Board 3 as Art Board 2? 

[R C-R]

You can name artboards manually to anything you want -- just double-click on the name in the Layers panel & type or edit the text, like for any other kind or layer.