The Election Commission of Pakistan has started working on the registration of Overseas Pakistanis to allow them to vote. This will be under process up till the 15th of September, 2018. The election commission has published videos (a compilation of which can be seen below) to inform Overseas Pakistanis on how to register & cast their votes.
[embedyt] https://www.youtube.com/watch?v=8d2iFNCYoZQ[/embedyt]