You can post any content card to a particular social media channel by sharing immediately, or adding it to that channel's queue.
Before sharing, you must select which channel you would like to post to.
You can also post any content card to a particular social media channel by scheduling the post for a specific day and time.
Select the channel you would like to share to, and then select the day and time. Content scheduled will be visible in your Campaigns.
Read more here about managing your social media campaigns.