[galaxy-user] Advice on disabling SGE queue on galaxy-cloudman

Hello All- I'd like to launch a galaxy-cloudman head node which does not accept SGE jobs, but as jobs are submitted go to compute nodes (or cause compute node to be added when auto-scale is on). Primarily, this is b/c I'd like to have the head node be a cheaper instance which can run long term, and only fire up more expensive compute nodes as they are actually needed. How would I enable this? Thanks- John