Your approach seems to be correct, ie to create daypart and then use repeating schedule with it.
Unfortunately as you can see those two fields in daypart exceptions are read-only, which is a bug that is already fixed and will be released in 1.8.0-rc3 of course.
What you will want to do in the meantime is.
Create a new event
Start time lets say Monday next week
End time Friday next week
repeats weekly
every 1
until (some Friday far into the future)
1.8.0-rc3 is overdue and should land at any time (perhaps even next week). After that I can’t imagine more than a month of further testing before we can release a stable 1.8.0 - however this is not a firm date (its a firm target though!).
That will repeat every week day, from 8am to 5pm, indefinitely.
Dayparts are more useful for when you have something that varies each day - for example “Breakfast” which is 6am-10am Monday-Friday, and then 7am-11am Saturday and Sunday.
You’d then schedule your first instance with the Breakfast daypart, and then set it to repeat every day (indefinitely, or to a fixed date, at your option).
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