Customized solution for timesheet updates

[Guest]

Hi

I want a customized solution for my question.

Say for Instance, If a resource forget to update his/her timesheet,

I would like to see a message (You forgot to update your timesheet for
*date/month/year*)

that has to popup at the time the resource shutting down their system.

In our organization, We would like to make sure the resources update their
timesheet on a daily basis.

Can anybody please let me know how to do this.

Thank you,
Chaitanya.