Dear Mr Tarun,
There is no format of the dasti Affidavit of dasti Summons. You simply have to submit in the court on the next hearing that you need the summons dasti to be served to your wife. In this way when the court will allow you have to take the summons, you take them personally from the Alhmad of the court and send them either by the Speed Post or in person and take the receipt of delivery or refusal from her the Speed post entry also has to me verified from the post office delivery on line report and will be considered by the court. here Court also can take notice for the alternate method of service by way of the publication in the newspaper.
It is better you take personal advise from a good Advocate for your case for your own benefit as normal citizens cannot do what an Advocate can do; of course on cost only as it is his profession..
You can call, Visit my Office or send PM for any further inquiry.