Reduced Cron

[Dazza]

Been some talk as of late about reducing crons into one file or two.

Now, would someone be able to do this for me? I can pay (PM to discuss) as I am new to crons and I assume, timestamps. Ideally Id like all crons into ONE file - Reason for this is because my host has changed their rules to not allowing any cron run less than 15mins apart, if the crons were in one file how often would this need to be run?

Any general info would be great too, like why people do this other than the same reason as myself.

Thanks