By default, you will be set to have the week ending on Sunday.

If you wish to change the week ending date for your company, you can follow the steps below.

You will first need to navigate to your admin menu, you can find this by clicking on the four squares icon at the top right corner.

You will need to click on Other Company Settings which will bring up the following menu:

There are lots of settings relating to your company here, but the one you need here is Week Ending Date Settings

Simply select your intended week ending date from the list, click save, and you're done!