You can tag Facebook Business Pages in Sprout Social. In the compose window, select the Facebook Page(s) to which you'd like to publish the message. To tag a page, add the @ symbol and begin typing the page name. A dropdown menu will appear to help you select the correct page.
Tagging other Facebook Pages is possible when you are publishing to only Facebook pages. If a Twitter profile is selected, the tagging feature will search Twitter profiles only.
Note: You cannot tag Facebook personal profiles. This is not currently available on the native Facebook platform or in their API.