All of our nodes in NPM are nested in groups or subgroups :
MasterGroup
Reseller 1
Reseller 1 Customer 1
Reseller 1 Customer 2
Reseller 2
Direct Customer 1
Direct Customer 2
What is the best way to select multiple groups and to use them in a report?
I think you need custom this report. with more implamentation. you make to create the script of this reportthe variables are in the last pages of the NPM d manual and within report write you enable the sql shows
The best approach would be create these Groups using custom properties & dynamic queries. Use the custom properties for reporting purposes. Otherwise, you will need to resort to custom SQL queries to generate reports on groups members on anything other than availability.