Once you've set up scheduled posts, you can modify or delete them on your dashboard.
To update the entire schedule, choose it at the top of the Share Jobs with your Social Network section. You can update the selected jobs, modify the schedule, or delete the automated posting entirely.
To update a specific post, select it in the Scheduled Posts list in the bottom half of the box.
Alternatively, if you'd like to ignore the schedule and post the message immediately, click Post Now.