Devide the components and Placing each of the devided components

I would like to divide a component on the schematic and place that on separate schematics sheets for each function.
Could you tell me how to way?
1) How to dividing a component? (For example, devide 100 pin compornent to 3 blocks.)
2) Then, How to put on the divided each components on the schematics of separately sheet?