...
Custom Metrics provide an ability to extend a list of standard metrics/charts. This can be helpful if you need to apply some specific calculations/formulas over PERF data. Custom Metrics v2 functionality provides an ability to select, join, search and do any kinds of operations on the data that PERFÂ has collected from Task Tracking System and Version Control data sources and also Custom Data loaderers.
To manage custom metrics go to Metric Catalog -> Create New Metric.
...