Guidance for MR behaviour experiment with static object positioning and collecting data

Dear Adam, thank you so much for your descriptive reply. I have some follow-up questions.

  1. First of all I don't want to use QR since I don't want objects to pop up when users only go close enough to the QR but I want objects to be present smoothly throughout the scene as the space of my experiment is larger (~100 sq. m). Prior scanning the hall is not a problem for me, since the experiment space remains the same;)
  2. You said I don't need the .glb model, then how can I position the objects at the specific anchors, do I need to use the unique IDs? Is there an example script or workflow for doing that on Unreal?
  3. Then about saving the position/orientation tracking and eye tracking data, I need to save it in Magicleap only, what kind of permission I need?
  4. Also I saw there is much more documentation available for Unity on spatial anchoring, do you recommend I change the platform or would u suggest me stay in Unreal?