Adding a location to your post is only available on Facebook pages and Instagram accounts.
Within the composer click on the Location icon and then the network you wish to add a location to:
All you need to do now is search for the location and select the one you wish to add:
Note: The location option you choose will affect the location that is displayed in your post. This won’t affect the target audience.
Once the post has been published, this is how it will be displayed on both networks:
