Customizing what information you'd like see in your media schedule is easy when managing your columns. You will notice a scroll bar to the right side of your media schedule - this will allow you to extend the view of data points you'd like to see or edit (as outlined below in the video).
From the action bar you will see a checkered box - simply click on this for a pop-up box to appear in order for you to configure your columns.
By selecting or deselecting items in the list, these values will be displayed in your media schedule to view. These settings also be the default across all your campaigns unless you make further edits and save them.