It would be really helpful to have the date picker element used in forms share the same start of week day as the rest of your settings. All my calendars have Sunday as start of week but (when using the form) a custom field I set up with a date picker shows Monday as start of week. Very confusing. I have already checked with support and it is not supported. [similar request at https://ideas.gohighlevel.com/email/p/scheduler-option-to-start-week-w-sunday]. I think it may be a bug since it is the fine if you click in the field in the contact record. I have included screenshots of the field in the actual form and in a contact record.