Field	Type	Required	Description
_id	string	+	ID of a created group
name	string	+	A name of a group
categories	array of objects	+	An array of category filters
devices	array of device IDs	+	Device identifiers to be added to a set defined by categories collection
exceptions	array of device IDs	+	Device identifiers to be excluded from a Device Group
persistent	bool	+	Defines if an object is persistent