The Fiscal Affairs Subcommittee of the Senate shall meet from time to time at the call of the President of the Senate or the chairman of the Senate subcommittee; and the Fiscal Affairs Subcommittee of the House shall meet from time to time at the call of the Speaker of the House of Representatives or the chairman of the House subcommittee. Such subcommittees may meet jointly at the call of the Lieutenant Governor and the Speaker or of the respective subcommittee chairmen.