Here is a good document covering your request. You will need to modify the trigger section as necessary for CPU and memory: https://support.solarwinds.com/Success_Center/Network_Performance_Monitor_(NPM)/Create_a_Group_of_Nodes_alert_using_a_Custom_property_to_Identify_Group_name_and_Group_Member_Name_With_Variables
I followed this document only. In the fig 4 of this document, you are saying the status of group to be up or down. I would like to set the threshold alerts of the group members.
for ex: condition should be like this if the cpu exceeds 70% it should alert me. how do I do that.
Thank you in advance