Currently, when a PR is merged into an Org (and the PR is linked to an Azure DevOps item), a discussion comment is added to the DevOps item documenting the merge. However, there is no indication in the comment to document the user who performed the merge. The Author of the comment appears to be the owner of the pipeline, not the user who performed the merge. My suggestion is to either make the author of the comment the person who performed the merge, OR in the content of the comments, add a line to indicate "Merged By: [Name of user who performed the merge]"