What is the "proper" sleeping arrangement for me and my baby?
There is no one way to arrange your baby's sleep, before you retire for sleep, and how well one approach works is, as always, determined by factors pertinent to each family and baby (temperament, sensitivity etc.) which are not known to an "advise giver" or the "expert". Try to remember that you know your baby better than anyone. Become informed, but make your own decision and feel good about it.
How you and the other caregivers feel about privacy and separation, or being close to the baby even when the baby is sleeping but you are not, and the physical circumstances of your house, can make a difference as to what approach or practice might work best. For example, some parents who retire for bed much later than the baby feel more comfortable if the baby is kept within proximity where, for example, the baby can be easily seen or heard, or "checked on". In these cases, the baby may not be officially "put to bed" in the sense of being placed in a room where all contact is broken. Rather in these instances the parents might place the baby in an open hall in a bassinet, or let the baby sleep in a bassinet in the living room, or in a carrier seat close enough to permit a kind of informal monitoring.
Interestingly, infants and older baby's fall asleep more easily in the context of family noise, rather than in silence, as is generally thought. This is because the baby probably feels more secure hearing that a care giver - or perhaps that something-- is going on nearby. It is always possible that a loud TV or an active herd of siblings could make it impossible for the baby to sleep - but generally it is hard to keep a baby awake if he or she is sleepy. But you can be the judge of how "intrusive" the noise level might be.
Some parents may choose to put the infant in a separate room with the door closed, where sensory access between the baby and the parents (and other family members) is not possible or likely. My preference is never to close the door to a baby's room since baby's find sleep when they need it, and they were not designed biologically or psychologically to sleep in complete social isolation. Some parents find it comforting to put some kind of walkie-talkie in the room, which is fine, except that a more appropriate use of the walkie-talkie talkie would be to turn the amplifiers around. That is pump family noise into the baby's room, letting the baby monitor the parents and siblings, rather than the other way around. Fifty years (at least) of human developmental research shows that baby's respond positively to physical and psychological sensory signals (sounds,sights, smells,touches, movement) from others when they "feel" that they are not alone. We might presume that external social noise gives young children a sense of security -- or something akin to a baby thinking "it's nice to know someone is around, should I need them".