Hi,
You cannot use mlaunch in reservation mode. The point of reservation mode is to tailor the queue script to a single job. With mlaunch, there will be multiple jobs that get pulled and the queue script cannot be specific to a single job.
You can, however, make sure that mlaunch only pulls a particular "type" of job. e.g., let's say you have mixed job type in the database and want mlaunch to only pull a certain type. You can use the FireWorker options to make sure that only certain jobs are being run within mlaunch. See the last part of "
http://pythonhosted.org/FireWorks/multi_job.html" for more details.
If that's not helpful, maybe you can describe a bit of what you're trying to accomplish.