Adding reciep to calendar

How can i add same recipes to diffirent date in calendar?

The best way to do this is to use the 'brew log' feature of BeerSmith.  If you highlight a recipe and then click on 'copy to log' on the toolbar, BeerSmith will create a copy of the recipe in a new folder titled "Brew Log".  You can add the recipe as many times as you would like and it will place a new copy in the brew log folder every time.  Then you can go in and change the brew dates on each recipe copy as you wish.

Next, go into 'options' and then to 'brewing'.  At the bottom of the window is 'calendar options' and you can set the options to show recipes in the 'brew log only' in the calendar.  This way you can also enter in the brew data for each recipe and it will be preserved for future reference.