How I can make carry for ascendency (chaos trials) for my buddy?

[Offenbacker]

I saw a lot off people selling carry in Trade chat but how its possible? I wanted to help my friend, I went to final boss and invited him. But he could not to enter to me, doors blocked failed to join, trials has already begun

[Vaal]

Idk really, but maybe if you both enter at the start of a run and he stays in the first room it will work.

[Dr. Rockso]

Could try having them just not go down the elevator into the fighting area until after you clear the room.