There are some little ones who prefer for Mom to be the only one who potties them. In this situation, the introduction of a new person can be gradual, perhaps taking a number of days or weeks until a bond and trust are established. Since baby and caregiver must both be relaxed, it would be counterproductive to subject baby to any form of discomfort or stress. If siblings want to help, it's a good idea to monitor them on a number of occasions until you are certain they are able to do everything properly. Older siblings can assist with the actual potty process once they have had some experience and trial runs in your presence.
Some siblings are able to read baby's signals better than adults.
Fathers and other close relatives and friends can assist by providing both moral and functional support. Nannies can be a tremendous asset if they are open to IPT, but be certain to give them sufficient training before letting them potty your baby on their own. Ask your nanny or other caregiver to jot down the times your baby goes during their care. Used under License.