Dear N is best!
You are from Islamabad so I guess your interview centre would also be Islamabad. So are you done with it or still waiting?
Secondly, As no senior member is guiding us despite our several requests and queries no one is giving response except you. Therefore, you are earnestly requested to guide us. We are confused regarding field related topics.Kindly guide us what should we study like;
only job duties of appraising officer coupled with basic knowledge about FBR or we have to study laws, acts, taxation system, audit, examination, valuation methods etc?
Your valuable guidance and advice can be tremendously helpful for us.
JazakAllah.

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Inspector customs/Intelligence officer