Before thinking of testing the "time management flow", you should learn about your environment.
Is the "Clock-in" and "Clock-out" times a parameter for Time Evaluation in your environment, and if so, is it for all employees or only for some. Are there salaried employees for whom only deviations for the norm (Absences and Special Attendances) have to be entered?
Also do searches on the web, and look for links related to help.sap.com or this site, and also visit the Wiki section of this site.