How to add your friend s channel and video

[@Lisa-yy4or]

I don't have any friends in youtube this helping to me

[@kiplane5229]

Can I add a video I’ve posted to my friends channel which is opposite of what your doing..your taking her video to yours but I want to give my video to his softball channel

[@tulysstudio3050]

Thanks

[@To8Noob]

me like and sub ignore the hater from dislike :D

[@alexandermadwrite2154]

But how do you do it on Mobile