I am fairly new to Revit so bear with me.
I want to add some parameters to the Project Information.
In Project Information you now have parameters for project name, project address and just a few others.
Now I want to add here parameters that are now only sheet specific such as "Drawn By" and "Checked By".
In our workflow we have this information static for the whole project.
I've fiddled with this yesterday for hour on end and could not find a way to add parameters to Project Information.
Also, it seems that all the available parameters listed for the titleblock family can't be changed. E.g. can I delete some of these that we never use. Or is this not possible because this is a System Family?

Thx

Leo