I agree with what NyxandBenny said, except I think scent swapping and then intros. I say this because the gliders will get to know each other's scents first making the introductions smoother.
I had a male, Finn, and a female, Quinn, I wanted to introduce. I've done it between cages before, but Finn would try to attack her through the cage.
After scent swapping i tried an introduction. He didn't attack her. All he did was the normal dominance behavior.
Then again yours may instantly get along and you might not need scent swapping. It does happen.
So yeah if you do want to begin intros try the cage idea NyxandBenny#8203; said and the move from there. Be sure to trim their nails before putting them together. :)