When your twins are older, you may choose to put them in separate cots placed close together, so they can continue to comfort each other. (nhs.uk)
If your babies have been sleeping together, you can try to put them in separate cots if one is waking the other. (nhs.uk)
Eventually, your baby may also outgrow his or her own separate cot and you'll need to think about putting a toddler bed in your bedroom instead. (abckidsinc.com)