Automated scheduling is available for the following channels:

In order to schedule a post, you need to click on the green "Schedule Post" button at the top right hand corner of the post preview.

From there, you'll be able to choose a post date, time, and schedule the post.

If you have multiple accounts integrated on a single channel, you can also use the selector by the "Schedule Post" button to select a specific account.

Watch the video below for more info: