Facebook doesn’t allow scheduling on personal posts.
Here’s how to schedule a post on a Facebook Group via the desktop website interface.
Tap the text box for a new message and write your message.

Select theScheduleicon next to the blue Post button.
Pick the date and time for the post to be published in the future and clickSchedule.
The screenshots below are from iOS.

pop crack open the Facebook app and sign into your account.
SelectMenufrom the bottom-right of the screen.
Choose the Group you manage from the carousel on top.

Tap the text field and compose your message.
SelectScheduleto kick off the date picker.
Choose a date and time, and then selectSaveto schedule your post.

Tip:
To reschedule a post, go to theAdmin toolson the left panel.
Tap onSee moreto reveal and select theScheduled Postssetting.
SelectReschedule Postand enter a new date and time.

The primary tool to schedule posts on a Facebook Page is thePlanner.
Log into Facebook in a web internet tool and go for the Facebook Page you moderate.
There are three ways to create a new post and place it on a schedule.

On theNew postwindow, put in your message in the text field.
Then grab the tiny downward arrow next to the blue Publish button.
Once you’ve selected the date, clickSave.

Though, this limitation doesn’t seem to be enforced on the mobile apps as we will see below.
The screenshots below are from iOS.
There are some noteworthy differences between the Facebook’s page management apps.

Creator Studio is for insights on posted videos on your Pages.
The Meta Business Suite gives you more granular controls to manage your Page content and also connects to Instagram.
Using Creator Studio
Creator Studio also let’s you schedule posts for future publication.

SelectVideo,Photo,Live, orText.
Create a post and selectNext.
ChooseScheduleand pick a date and time in the future.

Come back to thePublishingscreen and selectSchedule.
kick off the Meta Business Suite app.
Tap the “+” icon to display theCreate Newscreen.

Choose the throw in of post you want to schedule.
Compose the message in the field and selectNext.
SelectSchedule for lateras the scheduling option.

Pick the date and time from the picker and selectSchedule.
FAQ
it’s possible for you to schedule a livestream on Facebook through your status window.