Do not have this plant and do not know anything about it, just googled for photos - most show many potted together. Example HERE (photo from same site):

They seem to grow similar to Sempervivums - some synonyms are: Sempervivum aureum C.Smith ex Hornemann (1819) / Greenovia aurea (C.Smith ex Hornemann) Webb & Berthelot (1840) Sempervivum calyciforme Haworth (1819)

Photo (from ICN) of plant in habitat (I understand you want to grow it in pot):

I, also, have never heard they were included with Semps in the past. I read they are related to Aeoniium and Echeveria. I am not sure which varieties I have. The seller didn't specify in any of the cases. I just got the green and yellow one today. Too cute! When I get the second pink one (from a different seller) it will go in the same pot with the first pink one. That's why it isn't centered, lol.

I have one that I’ve had for about 3 years now. It’s never produced any flowers thankfully because it’s never produced any offsets. It’s the only one I have and my understanding is that they are monocarpic. Mine actively grows in the Winter/Spring and is Summer dormant so resting now. Not sure which one it is but looks more like an echeveria when it’s open but the leaves are much harder/stiffer than an echeveria.

Forget when I got mine, but it's Greenovia dodrentalis "Jade Ball". It's one big cluster.

I think planting them together is mostly an aesthetic choice. I wasn't so into them until I got one and now I quite enjoy it. =)

I do not know if synonym means that they are 'included'. I quoted ICN where I found synonyms...ICN - Greenovia

On ICN site, they are listed in genus Aeoniums.

Makes sense with the similarities. Good to know!