To create a saved search for missing timesheets of an employee based on the Weekly timesheet, the first step is to consider the Work Calendar Hours for each week.
Next, set the criteria as follows:
Under the Criteria subtab, choose the Formula (Numeric) filter.
The formula should be:
CASE WHEN {submittedhours}<{workcalendarhours} THEN 1 ELSE 0 END
Lastly, provide the description as equal to 1