Controversially in Pakistan the Attorney General had the right to private practice. The reasons for this was that in Pakistan an Advocate is institutionally independent, and is not in the ordinary course permitted to be employed. It is customary however that despite this permission to do so, AG's do not appear on behalf of other clients, with the exception of briefs accepted before assumption of office which are at a stage of litigation where it would be impossible to instruct another Advocate. Sharifuddin Pirzada a former three time Attorney General and Malik Qayyum were conspicuous for their use of this right and accepting private briefs even after assuming office which was viewed by many[citation needed] as unethical and a conflict of interest. It is pertinent to note that the last three Attorneys General before Mr. Malik Mohammad Qayyum did not make use of their right of private practice. The 18th amendment ( passed in April 2010) to the Constitution of Pakistan abolished the Attorney General's right to private practice.

as you can see from the chart this office was present in 1968. i will tell you after asking my teacher that after which amendment it was created.