Your plant is a pseuderanthemum. Common name is chocolate plant (Silvia was close). There are other forms with different leaf colorations. - June https://www.greenplantswap.co.uk/plants/15904-pseuderanthemum-atropurpureum

It looks like there are at least 2 plants in the pot? The picture is too dark, but the upright plant reminds me of Pelargonium graveolens "Colocho" ...... but more often than not I get trumped by someone with better ID skills. Al

common names are easy ... but it usually help[s to also retain the latin name ... i would guess its very easy to propagate ... check it out here : https://duckduckgo.com/?q=senecio+rowleyanus+propagation&t=ffcm&iax=videos&ia=videos but if i had used the common name ... well ... i suppose you can figure out what might happen ... lol ... ken well.. go figure ... no one worked with the joke: joke: https://duckduckgo.com/?q=string+of+pearls++propagation&t=ffcm&iar=images&iax=images&ia=images

Perhaps Crossandra infundibuliformis - Firecracker plant. It is a lovely plant, I adore orange flowers.