Challenge another user to a duel

Visit the profile of the user you want to challenge
Visit the profile of the user you want to challenge
Click challenge to initial the duelClick challenge to initial the duel
Name and describe the duelName and describe the duel
Categorize the duelCategorize the duel
Set the deadlines for the duelSet the deadlines for the duel
Set the submission types for the duelSet the submission types for the duel
Preview then initiate the duelPreview then initiate the duel