Hi Lynn,

thanks for your reply and basically in am trying to build a on call maintenance calender. the start date of the call should be as input to the logic.

for example, the member1 will be on call for the below dates.

02/02/2015 - 02/08/2015 as Support1

03/16/2015 - 03/22/2015 as support2,

04/27/2015 - 05/03/2015 as support3.....

like this, i need to build the calender for each 6 members for year 2015.

is my requirement clear now?