Not sure if this is the right place to ask this question...
We need to create an AppSource app, which should let you call Office 365 contacts. Basically, when you're viewing an Office 365 contact, the app should add links or buttons to call the contact.
How to make the call is something we can handle. What we need to understand is how to add these links or buttons to the Office 365 contact page. Is this something we can customize? What's the procedure?
Any pointers or ideas will be greatly appreciated!