I am wondering how can an admin add apps to Facebook pages? Do all apps in Facebook’s app center support pages?
Login in to your facebook account then open your FB Page --> Edit Page -- > Apps -- > Add your apps to facebook page. If you want to try other apps for your fb pages then search in google with the keyword "Facebook Fan Page Apps".
admin goes to the page he or she created
from there chose admin settings
from left panel click on app
i,m not sure if all apps in Facebook’s app center support pages?
I think this would help you