With the current version of Triggre this is not possible, however I might have a workaround:
1. Show images of a matrix based upon the authorization of the user. Therefore you need to create custom images with rights and roles and find the right picture via a look-up. This is an option, but ofcourse far from ideal.
2. Display it with graphs. Create a histograph (or radar chart) per row to check if you have acces or not. Also far from ideal.
As these options are far from ideal, I’ll ask for a new feature request for a matrix at our R&D department.