Auto-mapping

By tagging is that considered an automapping function?

You manually tag source and target. There is no automap function in Collibra. The Stewardship UI offers you a manual way to tag source and target.
If you can elaborate on your use case, it may be helpful to answer but if you are looking for auto-tagging a logical data model attribute to a physical data column then you have to do it manually . There is no automap feature available in the platform as of now.