A challenge allows you to specify what it is you want to accomplish and allow your members to give you potential solutions. Any moderator or administrator can post a challenge by clicking "Submit a Challenge."
Here you can specify the type of goal of your challenge, such as "Increase sales 10% in 2017." Next, you give some information on the core issue and then select when that challenge will expire (e.g., Dec 31st, 2016). You can also set a prize to help entice entrants. How you award that prize is entirely up to you but we recommend giving it to the person with the top votes.
Once you've submitted your challenge, it's automatically featured at the top of your IdeaLab and there's a special category page displaying ideas relating to your challenge. You can submit any number of challenges to run at the same time.