As far as I know PMS is not far below to CSS, definately CSS is the superior services exam... but at provincial level PMS carry great importance. There may be a person who have qualified PMS can share in detail. But according to my knowledge it is really a good post at provincial level.

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"When Allah leads you to the edge of the cliff, Trust Him Fully, only 1 of 2 things will happen either He will catch you when you fall or He will teach you how to fly"