You find that there is two panel(if you are not able to see then right click on orm designer screen and select show method panel).
One where you drag table and the another which is blank so here we use that another panel.
That panel is called method panel you can drop store procedures and function over there as shown in below fig- 1
After getting procedures & function on method panel you have to do just a simple task.
Just assign the insert ,update & delete method to related table using the custom property and map the fields of store procedure.
For that just check the property of table as shown in fig -2
Then click on either insert ,update or delete you will get following screen. Fig-3