I see there is no way to include into templates screens graphs or simple graphs (based on items) from custom low level discovery.

A question would be how to display the graphs, let's say we have a MySQL Template and for each database we are counting: size and number of tables.

How the graphs should be included is another question and I think the first option could be better:
1. Database1 size, Database #1 number of tables, Database #2 size, Database #2 number of tables

2. Database1 size, Database 2 size, Database #1 number of tables, Database #2 number of tables

I think this is an important feature on graphs side.