Hi Larry,
The On-Demand Reports are limited to 15 Charts per page. It can be configured to contain as high as 225 different individual charts.
This can also be done using an "IM On-Demand/Multi-Metric Trend Report" in a Dashboard. In that case, with a Dashboard, it could then be set up to email a copy of the report, including all pages instead of just the first page. That should give a report with the different charts in one report, 15 on each page.
Other custom Views set in a Dashboard may give better results than On-Demand reports as there will be more configuration options for most Views in a Dashboard vs the On-Demand Reports.
First Page versus All Pages options are new to r3.6 and are discussed here:
https://comm.support.ca.com/kb/how-to-schedule-full-pdf-report-emails-sent-from-ca-performance-management/kb000106934
https://comm.support.ca.com/kb/how-to-schedule-full-pdf-report-emails-sent-from-ca-performance-management/kb000106934
Hope that helps.
Thanks,
Mike