The Lieutenant Governor is appointed by the Governor for a term ‘during the Governor’s pleasure’.
The role does not in itself carry any specific duties or powers, except that the appointee is the first person called upon to act as the Vice - Regal representative in the absence of the Governor.
Where the Governor will be absent (i.e. from Adelaide) for four weeks or less or is suffering from a temporary illness, the Lieutenant Governor is appointed by the Governor as the Governor’s Deputy.
The Lieutenant Governor may also assume the administration of the State as Administrator and exercise the powers and functions of the Governor if the office of the Governor is vacant (eg in the period between Governors) or the Governor is on extended leave. The Lieutenant Governor can only act in place of the Governor on the written request of the Premier. If the Lieutenant Governor is not available to act as the Governors Deputy, the Chief Justice is the next in line to be appointed.
The Governor’s Deputy or Administrator performs the powers and functions of the Governor specified in an instrument of appointment made by the Governor, during the period specified. This usually consists of all the powers and authorities of the Governor, except the power to appoint a deputy.