Anyone in the company can create and add a baloonr. To add a baloonr, click on the 'Start New Baloonr' button at the top-right of your screen. You will be taken through a wizard-like interface asking you for the baloonr prompt, people you would like to invite as participants, the date and time by which you would want the baloonr to be active and whether you would prefer posting it anonymously or not. You can invite multiple people at once by adding a group, or just add people individually.
After your information is all set, you'll be shown a review screen. If everything looks good, just click on the ‘Submit Baloonr’ button to post it. Each invited participant will receive a notification email stating that they’ve been invited to your baloonr. They’ll also receive a notification each time the stream enters a new stage.