diff --git a/doc/PerformanceTesting.md b/doc/PerformanceTesting.md
index d56ce0815..927fb1967 100644
--- a/doc/PerformanceTesting.md
+++ b/doc/PerformanceTesting.md
@@ -238,3 +238,11 @@ The parameters of interest here are :
 Once you have everything in place create a pipeline using the definition in your in the cpp repo by going to https://dev.azure.com/azure-sdk/internal/_build?definitionScope=%5Cperf and create a new one under the cpp node. 
 
 To test intermediate definitions of your pipeline you can run the https://dev.azure.com/azure-sdk/internal/_build?definitionId=5121 pipeline and set the proper values for the cpp node( make sure to deselect all other languages except cpp unless you want to run them).
+
+To validate a set of changes using an existing pipeline, navigate to an existing perf pipeline and press `Run`.  Enter the following information in the presented dialog: 
+    - Branch/Tag: refs/pull/<PR_NUMBER>/merge
+    - Commit: <COMMIT_HASH> 
+    - The remaining arguments can be left as default. 
+
+Press `Run` and wait for the pipeline to finish.
+