In a rather confusing move, Facebook now has a separate option to promote posts on Business Pages for those businesses with less than the required 100 fans/likes.
Where Can I Find Facebook’s Promote Page Posts
These are now housed as part of Facebook’s Advert Manager section which is in the left hand sidebar of your personal profile. Click on the link and you will go through to a page that allows you to select the Business Page you wish to use.
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