Once you have set up the Stackla plugin follow the steps below to implement this within Facebook.
1. User selects 'Advertise your Business' from Page Options
2. User selects the 'Advertise' option that suits them
3. Under the Ad configuration, the user would press the button 'Select Image'
4. From here they have access to the Image Library (which Stackla would be sending to)
For any further questions or queries, please submit a request and our support team will get back to you.