We have analyzed the code review process in the Xen project, using MetricsGrimore. These are the instructions for doing a similar analysis with GrimoireLab. The software and notes for the first study are available in the xen-code-review-analysis repo. A great part of the work done for this porting to GrimoireLab is done as an Outreachy project, whcih can be followed in part at the corresponding GitHub repo (check issues).