I want to make a shared workbook that will have 100 tabs (each an
individual's timecard) which are all hidden on entry. Only 1 page visible,
HOME, where user inputs their social security number and either on enter or
click a lookup process happens to figure out which sheet to unhide. User
then inputs data, presses save and close buttons on sheet which hides tab
again and returns the user to HOME. On HOME there is a button that will
cleanup, make sure all sheets are hidden and exit the workbook.

And to make it harder, supervisors will need to have multiple sheets
unhidden so they can review them and approve.

thanks.