The NWC WF action 'Pause for duration' takes a number and unit value of time to pause, and the number will accept decimals. So, 0.5 Minutes is a valid setting, but I've read on the O365, SharePoint WFs this the minimum is actually 5 min - unless you do some facy work with PowerShell.
So I've read the help docs and this doesn't provide an answer. Does anyone know if pauses for <5 minutes are possible with this WF Action in NWC?