Hey guys does any body know how i can play my own custom challenges ive tried but it says on waypoint ‘not in progress’ please how do i do it?
Not sure, never used any custom challenges, sorry 
First, welcome to Halo Waypoint.
If you want to create a custom challenge - go to the top of this site, then click challenges, scroll down and click ‘create a challenge’ and select what you want the challenge to be then create it. If you’re having doing this, you’ll have to be more specific.