Thank you Duncan.
I try what you suggested and that is what i need.
But i have one little problem whit repeating period. There is not one month period. Instead there is four weeks period. That will move date from month to month. For example if first campaign start 29/12/2015 second will be scheduled four weeks in future, 23/02/2016; third will be scheduled to 22/03/2016; fourth 19/04/2015 and so on …
It is not what i exactly need.
I need to send campaign 29/12 - 29/01 -28/02 - 29/03/ … whit day or two deviation