The timesheet can display a full pay period of columns instead of just one week.
The timesheet can be configured to display a weekly time period (default) or arbitrary pay periods. Normally, the timesheet will display columns for Monday - Sunday. Most professional employees use it in this way, entering hours for M-F, and leaving the weekends empty. But some companies will either set the first day of the week to another day, like Sunday, or they wish to show columns for every day of their pay period.
For instance, some pay periods begin on the first day of the month and end on the 15th. The next pay period goes from the 16th to the end of the month. Any arbitrary date range can serve as a pay period. You configure them any way you like. Simply configuring a series of future pay periods, causes the timesheet to change display from weekly to the defined pay period date ranges.
When submitting the timesheet (optional), you are submitting the entire pay period. Approvals are also for the entire date range. Of course, you can lock a date range for any arbitrary period. Locking date ranges prevents users from editing timesheet entries which might have been billed to clients or sent to payroll.
On a detailed note... you can change the timesheet to display all the days of a pay period, or remain in a 7-day format. In the 7-day format, you see columns for M-F and a notation for the pay period you are in. In the full-period mode, you see a column for every day of the pay period and a scrollbar at the bottom to navigate through them.