how to find last change of data in html

Question

Hi
can any one tell me how to find last change of data in html.suppose i have three users

first user
second user
final user

First User
I assume create a single page in admin panel and send approval for second User.
 
My question is how to find second user is what parts make first user.

for example

suppose first user make a page. in this page have two textbox.

second user how to assume two textbox all ready there or enter new two textbox.

plz help me it's very urgent .