Transfer of plot in the name of buyer while being out of country

Being out of country, i want to buy a plot in a cda sector through my rep. In islamabad, what will be the procedure to transfer the said plot in my name without coming to pakistan for this purpose.

I know for bahria town, you need to email an authority letter, transferring your power of attorney to a relative. The allotment letter would be in your name still.

Not sure about cda but it can't be very different.