If you have a specific design which you like and want to make a second variant from it, without having to set it all up from scratch again, you can easily create a duplicate of its' existing version and then make all the necessary adjustments without changing the original design.
Go to the "Designs" tab.
Next to the design of your choice, on your far right click the three dot symbol (
).
Click "Duplicate".
Alternatively, you can click on "Duplicate & Move to...". This will allow you to duplicate the design directly to a different project or team.