SSD configuration

Starting on the NAS journey. I bought a QNAP 473 and have a few questions:

1- What kind of volume do I setup on the SSD? Static, Thick or Thin ?
2- If I download the Roon application for QNAP, I presume that downloads the core only. Currently, I have core and interface on my mac mini. Do I need to reinstall Roon on my Mac mini?
3- How do I force the installation of Roon Core and database on the SSD?