How would I be able to do this with wappler?

What I want to create is a staff login and out system to identify the times they work.
But I need to be able to view the results by week and total the times up.
We close for 1 day midweek, so displaying the last 7 would not work, also if I checked it mid week then it would show hours for the previous week as well (if I used last 6 entries) any ideas or inspiration?