RosCard

The explanation is:

The fifth Rosicrucian in the Monastic level of the quasi-religious path is considered the stable balance between the four other Rosicrucians (who act as the Monastery's accountants) and the rest of the members (GD&OTO) of the Monastery. Therefore, their role is both clerical, as representative of the board of the Monastery's trustees, as well as clergical, performing such roles in rituals as the one depicted above.