Step 1 - Create your Feed post as normal but before posting, make sure the “Add paid partnership label” checkbox is checked.
Step 2 - Select “Add brand partners”
Step 3 - Search for the brand partner or select previously approved partners
Step 4 - Make sure to check the checkbox “Allow brand partner to boost”
Don’t use copyrighted music - instead, use the royalty free music library that Meta makes available in the creator studio https://www.facebook.com/sound/collection
Don’t use additional hashtags or captions in the image