Study the Functions used in your Time Evaluation schema, and the Operations used in the Personnel Calculation Rules it contains.
As it implies, Time Evaluation processes time related data (such as Attendances and Absences) on a daily basis and produces data that will then be used to manage time related objects (such as Quotas) and to process payroll (such as WageTypes).
Please look at the Time Management page of this site
HCM Time Management - ERP Human Capital Management - SCN Wiki
for more information, and also search on