1- WHERE AND WHEN ARE THE JOINT COMPANY MEETINGS ARE MADE?
1.1-
 General Assemblies have stated meetings and emergency meetings. Stated meetings are done in 3 months since the end of operating cycles. In these meetings, negotiations and decisions are made for the choice of members, financial tables, the yearly reports of executive board, the usage of profit, determination of the profit and earning shares that will be distributed, all the issues related to operating cycles and other necessary matters.
1.2- General Assembly is called for emergency meeting when necessary.
1.3- General Assembly meets in the headquarters of the company, unless there’s a provision against it in the prime contract.

2- WHO CAN CALL THE GENERAL ASSEMBLY FOR MEETING?
2.1-
 General Assembly, can be called for meeting by the executive board even if it’s out of date. Liquidating agents can also call the general assembly for meeting related to their responsibilities.
2.2- In case the General Assembly can’t meet frequently and there is no opportunity fort he meeting quorum or the meeting quorum isn’t present, with a permission from the court, a single shareholder can call the general assembly to meeting. Court’s decision is final.

Source: Turkish Commercial Law