Guys,from regional office Karachi, HEC attestation needs 6 days. u will need to be there between 8-9 am however later u get there longer will be the queue (for the token) , after 9am the will close the door and will not allow u to join the queue. they say that there is 50 token quota but they ignore it and allow every1 a token who is in line to get one. (be there early, don't risk a day)
anyways before this you need to get a slip print out from their online reservation system.. (it doesn't reserve u a spot but they need the printout so get it)
what else u need
NIC copy (also keep the original)
Matric and Inter certificate original and a photocopy ( don't need marksheet)
Degree(s) u need to verify and related transcript/marksheet original and copy
fee in cash
they will guide rest of the way when reach there.
they will give u a date 5/6 days later to collect ur documents ( i got it back on 6th day)..
this was based on my experience couple of weeks back, anyways have fun attesting