How can I add more than one description in a repeatable zone?
I'm afraid that isn't possible, you are limited to just 1 instance of each tag in a repeater. Depending on how many sections you or your client anticipate on having you could build a static template instead with each section in there automatically rather than using repeaters, then you could have as many tags as you needed.
So is it possible to add a repeater in a repeater? that would solve it.
your repeaters can only have one level.