So, seemingly simple question that I cannot find an answer for. SE keeps saying that you can "combine multiple guildleves" for increased rewards or somesuch. It does not however seem that anyone bothered to explain how this is done. As far as I can tell, when I activate one at an aetheryte, I cannot simply start another one without abandoning the one I've already started. How then can I "combine" them if I cannot activate more than one at any given time? I feel like I'm missing something here that I should have noticed or something.
You won't see anything for level 1 Leves, but for higher levels, when you exchange them at the leve distributor, you will see stars by them. The more stars, the higher the reward you get from the NEW leve. :)