Filter Table Entries In Another Table

From your previous posts in this topic, I gather that you are auto creating a set of attendance records as. Child record to a Department-Day record.  I assume that your current trigger for the pipeline is when the Department-Day record is saved.

An alternative would be to have the user save the Department-Day record  and show an embedded report of Employees in that department.  That would give a previe of the employees for whom a daily attendance record will be created,  then have a button to update  date time field or a checkbox field to trigger the pipeline to actually create the daily attendance records for that Department-Day,