Is there a way to automatically set occasional maintenance windows?

Answer from our support team:
yes - customers can schedule things to happen in an order with dependencies using event chains. https://documentation.solarwinds.com/en/success_center/sqlsentry/content/events/event-chains.htm#:~:text=An%20event%20chain%20is%20a,node%20from%20the%20Navigator%20pane.

There is the idea of window in SQL Sentry.  You can define when alerts fire or don’t fire.  You can also set up on-call rotations, so certain users get alerts during their window. 
https://www.sentryone.com/blog/scottfallen/alerting-call-schedule-sql-sentry <-- blog that explains