How can I add a Profile Pic for an accont that doesn't have one?

Kelemvor333 There is a section of this article that describes going to the Exchange Admin Center to upload images for other users. This is how I prefer to do so with new hires.

It really should work from the Office 365 Admin portal as well, but you never know with Microsoft.

https://support.office.com/en-us/article/add-your-profile-photo-to-office-365-2eaf93fd-b3f1-43b9-9cdc-bdcd548435b7

Yes, this profile photo will span across all Office 365 applications.

Also, I have never tried adding photos to conference room accounts, so it is possible that there might be something about those types of accounts that prevents it from working. These photos used to be stored in a SharePoint site collection for all users, so it's possible that only user accounts can have photos.