On the Topic Manager page, click on "+ new challenge".
Scroll down and click on the Standard Challenge.
Fill in the Standard Challenge requirements in the "Challenge Title" field. E.G. "Make someone smile."
If you'd like, you can give your players more information/context behind the Challenge in the "Challenge Description" field. E.G. "What was the experience like? Go into more detail about how you made this person smile."
Scroll down and click 'save challenge'. Your Standard Challenge is now ready.