Dynatrace has a concept of Measures. Depending on the type of measure, e.g: # of SQL Calls we tell you which server caused these calls (App SErver 1, App Server 2, ...). For basic monitoring metrics such as CPU, Memory, Throughput, ... we also capture this for each individual tier.
If you put these measures on a chart you can select for which application, agent or agent group you want to show them. There is a drop down box in the Measure Selection Dialog.
Let me know if you want to know more. Also - feel free to use our own discussion forum on our community. A lot of these questions are already answered there: https://community.compuwareapm.com/community/display/DTFORUM/dynaTrace+Forums+Home