Running misters for less than 1 minute

I have misters in a greenhouse that I would like to run every 15 minutes for about 15 seconds. Is there a way to do an interval that is less than one minute and what would be the best way to setup a water schedule of every 15 minutes from like 11:00am to 6:00pm daily?

Sorry we currently do not support that functionality.

We do not currently support this in the app. IFTTT might be your best option if you want this level of schedule control.