So, the situation we're in is that we're stuck at the Bloodboil boss, some people had to leave cuz the whole raid takes a while to complete so we're left with only one tank left and 3 healers.

Question is, can more people join the raid? The premade tool isn't letting us "start a group" to recruit more members, and we do not want to start from the beginning as killing these bosses and the trash takes hours.

What do we do?