How to make a challenge?

Question

I've come up with some challenges, but I don't know how to make one

Answer 1

If you are on Phone:
When you enter SoloLearn app you should get in home screen be default, scroll to the left to get to challenge menu, and then click on the plus sign in bottom right corner, choose your programming language, after that make sure you are in All player tab, and choose any if the players in front of you.. (or choose random opponent).
If you want to challenge a specific person, click on their profile pic ( try mine), once you enter their profile, click on the 3 dots on top right and press challenge, then pick your language aaand done 😁.

Answer 2

Quiz factory. Where is it?