I would like to have back up once in a mounth and not hourrly,
I use time machin for my back-up proces with time capsul hard-disk,
How I can manage the schedule of the back up proces changed to once in mounth?
Why do you want to do that? When (not if) something awful happens, you may lose a month's worth of data, photos, e-mails, browser ookmarks, etc.
Please see Time Machine - Frequently Asked Question #13, especially the pink and yellow boxes.