Reach 360 - How do I Customise the Certificate Background

Hi all

We are just starting to properly use Rise 360 for our internal courses and we are going to be trying Reach 360 as our LMS solution.

I can't seem to find any information on how I can customise/change the default certificate background to one that is more on brand.

I've gone through the following article: https://community.articulate.com/articles/reach-360-create-and-manage-certificates

However, the certificate background itself is also what I want to change. With our last LMS I could upload a pdf document with the background I wanted that would then act as the default background that all text would sit on; however, I don't see that option in Reach 360 and searching the forum I couldn't find any threads related to this.

Is this possible?

Thanks in Advance

Carlton