How to properly display the achieved certification

I am unsure why it's such an issue at my employer, but I believe it has more to do with how our signatures are set up in the background. It was originally after my name, but because we use all MS products, instead of my intials being JT, it turned it into CT (I have no idea how, and personally believe our IT company is causing the grief.

I was hoping there was something written, so I could say, this is how it's supposed to shown. But that being said, there was a comment above, by Andrew Craig, about how the accreditation is to the person, not the role.

Thanks to everyone for their comments, I will have another conversation with my employer about this; they want us to have the certifications, they just don't seem to know how to properly use them.