You must meet these criterias
1) You have a personal page in FB (for example> Rosamund Wo)
2) You have 2 Facebook Business Pages with the same name (Rosamund Wo) and places Kuala Lumpur (for example)
3) You have 2 Facebook Business Page managed by a personal page (for example> Rosamund Wo)
4) You have clicked “LIKE” in both Facebook Business Page and became their admin “Manager” in both pages.
If you meet the above criteria, then login to your personal page in FB then “Use Facebook as Your own Personal Facebook” then go into the main of the Business Page in the settings “Merge Duplicate Pages”
“Now you can merge duplicate pages into your primary page so that you can manage things from one place. If you merge these pages, we will merge all your fans and any check-ins you have, but all other content from duplicate pages such as wall posts and photos will be lost and permanently deleted.”
After you merged, you’ll be asked to choose your URL web address.