Weekly maintenance

For weekly maintenance, we have to specify the starting time and the length of the maintenance period, the same as for daily maintenance:

We also have to choose on which days of the week the maintenance will take place—we can choose one or more. During the main period, maintenance will start every specified day of the week at the specified time. It will start every week with the Every week(s) option set to the default, 1. We can change this and make the maintenance only happen every second week, third week, and so on.