There have been periods in the history of the institution when neither Deputies nor Grand Wardens are mentioned, but there is no time in its existence when it was without a Grand Master; and hence Preston, while speaking of that remote era in which the fraternity was governed by a General Assembly, says that this General Assembly or Grand Lodge "was not then restricted, as it is now understood to be, to the Masters and Wardens of private lodges, with the Grand Master and his Wardens at their head; it consisted of as many of the Fraternity _at large_ as, being within a convenient distance, could attend, once or twice in a year, under the auspices of one general head, who was elected and installed at one of these meetings; and who for the time being received homage as the sole governor of the whole body."[9] The office is one of great honour as well as power, and has generally been conferred upon some individual distinguished by an influential position in society; so that his rank and character might reflect credit upon the craft.[10] The Grand Mastership is an elective office, the election being annual and accompanied with impressive ceremonies of proclamation and homage made to him by the whole craft.

Uniform usage, as well as the explicit declaration of the General Regulations,[11] seems to require that he should be installed by the last Grand Master.

But in his absence the Deputy or some Past Grand Master may exercise the functions of installation or investiture.

In the organization of a new Grand Lodge, ancient precedent and the necessity of the thing will authorize the performance of the installation by the Master of the oldest lodge present, who, however, exercises, _pro hac vice_, the prerogatives and assumes the place of a Grand Master.
The Grand Master possesses a great variety of prerogatives, some of which are derived from the "lex non scripta," or ancient usage; and others from the written or statute law of Masonry.[12] I.He has the right to convene the Grand Lodge whenever he pleases, and to preside over its deliberation.

In the decision of all questions by the Grand Lodge he is entitled to two votes.