Keyboard shortcut to switch between different Window Layouts

What are the keyboard shortcuts to switch between the 7 Window Layouts? Also while I am at it, how do you save custom layouts to be able to reuse them in the future?

Thanks.

What are the keyboard shortcuts to switch between the 7 Window Layouts?

There is no shortcut

Also while I am at it, how do you save custom layouts to be able to reuse them in the future?
In your startup file create any additional layouts and then press Ctrl+U to save your current blend file as your default. You cannot directly save out a layout for use in another blend file

Thanks Richard. I actually found to switch, it’s Control + left or right arrow. I had to disable the original keyboard set up for that shortcut before it could work.

Thanks for the other info too.