How to Get the Current User's Profile and Job Title in Power Apps (MyProfileV2)
User() gives you a name and an email, but not a job title, department or first name. For those, the Office 365 Users connector has Get my profile (V2), called Office365Users.MyProfileV2() in Power Apps. Here's how to call it, how to ask for only the fields you need, and where to keep the result.
