I need to create a condition with a statement that will send a notification when the event is starts after 5pm or the event starts saturday or sunday.
Could you please share a screenshot of your flow's configuration?
Do you create an event within your Outlook calendar?
I have made a test on my side and please take a try with the following workaround:
@or(greater(formatDateTime(triggerBody()?['Start'], 'HH:mm'), formatDateTime('2018-04-13T17:00:00Z', 'HH:mm')),or(equals(dayOfWeek(triggerBody()?['Start']), 6),equals(dayOfWeek(triggerBody()?['Start']), 0)))
The flow works successfully as below:
More details about using expression in flow actions, please check the following article:
Use expression in flow actions
Check out the on demand sessions that are available now!
ISV Studio is designed to become the go-to Power Platform destination for ISV’s to monitor & manage published applications.