I myself, 'dedicated' my children, I believe that it is when you bring your child/children to the church/place of worship to be part of its family; usually it's done while standing in front of the congregation and presenting by name your child/ren. And 'Baptism' for me is to be 're-born' in the Spirit by water, as John had been doing while waiting for the Son of Man-Jesus, the true baptizer of the Holy Spirit. Which nowadays can be done at the Fount, or even out at a lake or any place where there is water. I do hope I have been of help.