For Omada devices, you need a "Controller". You can run the Omada Controller software on an existing computer, get one of their controller devices, or use their cloud-based service, which should be free at your scale.
The Omada device* I researched also supports standalone mode and hosts the web UI like any other consumer router.
* https://www.omadanetworks.com/us/business-networking/omada-r...
I’m pretty happy with my Omada controlled EAPs around my house.
Running Omada on my Windows Server was painful (doesn’t really run properly as a service, software updates are a chore), but since I moved it to run on Proxmox using a super simple LXC image (I maybe got terminology wrong here) it’s been very nice.
Supposedly I should have excellent roaming between the APs, but I’m not sure how to check. Certainly, walking from one end of the house the other while on a Teams or WhatsApp call on my phone has maybe only a super minimal amount of time that I might not hear the other person (sub second for sure, if at all), but mostly I don’t notice.