@spikecurtis is this a duplicate of #2030 ?

@spikecurtis this is intended behavior (I think). If you specify a start time (in the above screenshot, the start time is 9:30am), you must select at least one day of the week. This is dictated by the BE:

And we've designed intentionally around this constraint on the FE and added tests for it. If you clear the start time field, you can successfully submit the form without any days selected.

I think what we should do here is amend the validation message so it says something like "Must set at least one day of the week if start time is set" and I can submit a PR for that.

#3043 is definitely an improvement!

But, it seems to me that the same lack of clarity/precision around the error message for days applies equally to the start time. It currently says, unqualified, "Start time is required" when really, "Start time is required if any days are selected"

Good catch! How about we change that string to Start time is required when days of the week are selected? I'm going to tag you in the PR I'm making and you can tweak the language if you like.

Fine to tag me, but that language sounds ok. Note I opened a new issue: #3051 with some more minor annoyances and suggestions. I'm not claiming this is high priority!