No Timesheets in to-Do Pane
If timesheets are no longer showing up in the 'To-Do' pane, the following steps should allow you to view your upcoming timesheets.
In the top ribbon, select the yellow file folder and select 'Timesheets' when the dialog box appears.
In the upper right of the dialog box, select the 'Draft' radio button, type your last name in the search field box, and then select the search icon in the top right. (shown below)

This should now show all of your upcoming timesheets.
Please reach out to the Service Desk if you need any further assistance.