KB14102: Assigning permissions

When you first install the app, you may receive this message:

"Your user lacks the permissions required to configure the app. Your user needs to have 'Manage Web' permissions. This can be accomplished by assigning Full Control permissions for this user from the site hosting this app."

This can most commonly be accomplished by adding the user to the "Owners" group in the host site, and then navigating back to the app.