'By invitation only Church events' are By Invitation Only. They are NOT public community events. They might be for internal training, group practices, planning or business meetings, private Bible study/prayer/worship etc.
'3rd Party Room Hire' is when a meeting is held in the Church building but organised by external organisations or individuals. These events have to appear on our publicly visible calendar however they don't feature on our 'Public Community and Church Events' display on the Home Page.