To put it plainly, EACH person must be registered separately at the address where they are staying. You enter their name, passport # & country of origin. We own our condo. When we arrive in Thailand, or back from a trip within Thailand, I must log in and register myself as staying at that apartment, and ALSO register my husband as staying at that apartment. I am listed as the owner - the owner must register EVERY person staying at that apartment, individually.
I also use this clinic for vaccines. I asked a friend in Taiwan the price for the shingles vaccine there (I travel to Taiwan frequently) - it was cheaper at this clinic in Bangkok. Their prices are on the website, so you know in advance. (My friend said he'd get the vaccination next time he's in BKK 😅.)