Minimum Time Off Between Shifts
If you want AutoFill to give your Helpers a minimum time off between their shifts you can set the number of hours on the SETTINGS>Info & Settings page. This setting is also used in the Shift Change window to show if assigning a shift will conflict and is included in the Analyze Schedule function. This is an organization-wide setting. You can always manually assign shifts with less time between shifts if you need to.
To set the minimum time off between shifts for all Helpers:
From any page
The next time you use AutoFill it will only assign Helpers shifts that are at least this number of hours apart. You can see if any shift is in violation of this rule using the ANALYZE function on the Sortable List Schedule view.