For me it depends on the age of the child, if they are new to daycare and many other factors ...I am not good with CIO with infants so 10 minutes and if they have fallen asleep on own I have to go in and reassure them and try again - if need be I pay a bum for a minute eventually I always have good long ballets who can go on their own some just need help learning how in beginning!

Old children wit language who are choosing to cry cause they think it will get them their way for something - that I can let them CIO until they realize that words have more power here and sometimes you just gotta do stuff you do not want to and make the best of it!!!