Queue system basically bugs which isnt a huge deal because we can still challenge one another for the most part with only a couple minor bugs here and there that either respawning or reloading the plugin fixes.

If you only set one custom duel zone and the config is set to duels only and 4 people join queue, then all 4 people can load into one zone, but only the ones dueling each other can hurt each other which has actually led to a lot of hilarious confusion on my pve/pvp server. But yeah now we only use duel challenges. 

amazing plugin btw