Not sure that there is an easy way. I created a custom symbols for a "revision block" and "revision text" and inserted them into the upper right hand corner of each my drawing templates. By using a custom symbol, I was able to maintain a consistent appearance across each drawing size without having to re-create each time. It is essentially a table with 4 columns and 1 blank row initially. I add rows as required, by drawing a horizontal line and extending the verticals. Kind of cumbersome, but it works. Knowing what I know now it would've been easier just to use the table function. I think I would use tables if I decide to create new templates. Either way, you are just populating cells with text ... not a data field that ties back to the part or assembly.
I've attached an example C size drawing template for your reference.