Ritual instruments are generally hidden and protected. Each coven is autonomous, headed by a High Priestess and her High Priest. Covens vary in size from approximately 8 to 14 members. The High Priestess heads the coven. The High Priestess who trained her is recognized as a Queen to whom she can turn for counsel and advice, thus maintaining a lineage of High Priestesses throughout Gardnerian Wicca.
Members pass through three initiations, each of which is normally at least a year and a day apart.
The High Priestess and her High Priest are responsible for coven activities, serving both as leaders in the rituals and as teachers for coven members. A High Priestess, or a woman she has delegated, can cast a circle. Wiccans usually worship as a group. Individual worship is possible, but not generally practiced. Worship takes place in a private location in which a circle can be drawn according to prescribed ritual formulas.