Under what permission to prepare the source code of the admin panel?

Question

Layout

It is necessary to develop a custom design for the admin panel with many functions. Consists of a side menu, top bar and blocks with different content.
Blocks should not only stretch, but also rebuild, the number of columns changes depending on the width of the screen.
- Under what permissions to prepare a design and what to do with the grid?

Answer 1

What requirements the customer puts forward or what options you offer him, prepare for such.