When sharing a post to LinkedIn you will have the option to Share now or Schedule:
If you wish to schedule your post you can select Schedule as shown above, and you will be prompted to enter a time and date for your post to be shared.
Once you have selected your time and date you can click Schedule Shares and this will add the post to your Queue.
To manage your scheduled posts/shares you can navigate to the Queue tab:
This will allow you to see your new Scheduled post, as well as any others scheduled by your team.
Should you wish to cancel a scheduled post, you can click the 'delete' icon and it will be removed from the queue.