need to place a holographic map on a real-world table

Apologies if this is a newbie question. I have tried googling the answer, but I’m not even sure of what search terms I should be using.

Basically, I’m creating a Hololens project that involves (in part) giving users a holographic map of a specified area. I can create the map ok. However, rather than having the users try to place the map somewhere, I would like it to snap to a selected tabletop (or other flat surface) in the real-world, matching the table’s shape and dimensions as much as possible.

Is that doable? Is there something you know of in the Asset Store that can help? Are there scripts or examples or instructional material you can point me toward? Any help would be appreciated.

Thanks much.

Have you checked HoloGraphic Academy? There are several examples there that might get you started

Check out GitHub - microsoft/MixedRealityToolkit-Unity: This repository is for the legacy Mixed Reality Toolkit (MRTK) v2. For the latest version of the MRTK please visit https://github.com/MixedRealityToolkit/MixedRealityToolkit-Unity , it can help you find flat surfaces