I am looking for the "best practice" way of scheduling numerous jobs.

We have around 30 IMan jobs which run on various schedules, some are hourly, some 4 hourly, 2 hourly, every half hour, daily etc.  In many cases the jobs are expected to find no input data so the job just goes back to sleep until next time.  Until now I have attempted to schedule them at different times within the hour, but it's getting more and more difficult to keep track.  These jobs are mostly importing from csv to Sage300, or exporting from Sage300 to csv files.  I did attempt to use triggers for jobs that start with csv readers, but there were issues with files being only partially processed (as per forum discussion about 3 years ago). 

If I simply schedule every job on the hour (still some hourly, some every 2 hours, 4 hours etc) does IMan try to run them all at once or is there a way to make it wait for each job to finish before the next starts?  If they all run at once, can IMan cope with this (assuming there is no logical conflict within the application definitions)?    I am thinking, for example, that I could schedule all the Order Imports on the hour, then all the jobs that process orders at half past the hour.

How do Realisable recommend tackling this, and how do other people do it?