It looks like each day has a boolean that says whether or not the day is a working day:
With this, you should be able to check at the start of your scheduled event if today is a working day.
So, create a scheduled event, where you do this:
- Retrieve “Day” from the database where DateFrom = current date (only retrieve “first”)
- Make a split where you check if workingday is true or false
- If true, execute your scheduled event
- If false, go to an endpoint because it's not a working day