If a site has the same range for multiple days of the week rather than setting this one by one you can group the days together.

In the 'Options' dropdown filter to the site(s) you would like to assign ranges to.

In the ‘Group days’ dropdown select the days you’d like to group. For example, if the site has the same range Mon-Thurs you would select Monday, Tuesday, Wednesday and Thursday.

You can select the range you would like to assign to these grouped days.

This will save automatically.