I want to build the time sheet it requires people  input the time by themself. Person A cannnot input the timecard for person B. Peron A can view all others 's timecards but not being able to edit them.  

How we can control this ? I am thinking about the login account that helps the database keeps track with the login user?

Can many people login the database at the same time ?

What lesson you cover this feature ?

Thanks,

---

Reply from Richard Rost:

I cover individual user logins and controlling what users can do in my Access Security Seminar. http://www.599cd.com/site/courselist/seminars/access-security/