Not sure what you are exactly looking for but here are a couple ways to populate into a bunch of spreadsheets:
You can click on the tab on the first sheet your input is going to be typed into. Then press shift and click on the last tab you want data to be entered into. When you type in lets say A1 of the first sheet it will put the same data into all of the sheets up to the other tab you clicked on.
Also I would just say to create formulas linking all the spreadsheets together.