marvsinc like bald said you can only use your IDP if you come to Qatar as a tourist and yet you have a time limit to use it. After you get the RP you "must" have a valid Qatari driving license. Otherwise if involved in car accident fines go from 5000 up to 50000 QAR even imprisionment.

Requirements for QDL are:

No objection Letter from employer
Eye test
Copy of RP/Passport with RP stamped
2 Passport size pictures
Register for the driving test

If you fail you will be entitled to have an additional opportunity to do the test right one month after the failure.

If failed for the first you will have to register in driving schoool of your choice and do a 7, 12 or even a 24 days course.

Regards