Dungeons with friends?

I saw some older forms on how to play dungeons with friends, but it sounds like that was for an older version of Wynncraft. I'm level 40, and I'm not able to get my friend (who is in my party and on the same server) into the same dungeon, fighting the same boss together. Is this possible, or did that feature get removed?

 

you need to enter the same dungeon less than 10 seconds apart from each other after giving the key collector a key

 

I think, and this is what the key collector told me, a max of 4-5 people can enter with one key, and they must enter within a minute of the key being given