We are using cron schedule to update stock and prices by xml upload.
Schedules are every hour, or once a day.
Once per hour is too frequent, but once per day is not enough to syncronise to all our systems
Is there a way to make the schedule every 2 hours, or every 3 hours etc?
Unfortunately there is none.
You can, of course, create multiple schedules for the same task. For example, you can create 4 schedules with day interval