This might be useful for the J1s applying for exco. Here is a rough job scope.

Chairmain:
Oversees the running of guitar ensemble.

Vice-chairman:
Aids the chairman. Adminstrative.

Secretary:
Admin. Attendance. In charge of $$$.

Publicity ic:
Publicise cca, poster/banner-making. Liase with other ccas.

SLs:
Teach other members. Coordinate a section.

Student conductor:
Arrange songs. Conduct the performance.

Quarter master/mistress:
Stock-taking. In charge of logistics.

However, our job scopes do over-lap because we ought to help out one another in the exco! And you don't need to be in the exco to help out. Even as a non-exco member, you can as heavily involved in guitar stuff too! :D