Pooling of funds by retirement systems for investment purposes; accounting practices with regard to pooled funds. Power of a local retirement system to hire an actuary; payment of the administrative costs of a local retirement system; periodic actuarial investigations; annual financial report. Report of the state auditor on the condition of local retirement systems. Duty of governing authorities to make and file actuarial investigations and to file financial reports; withholding of state funds for failure to meet this duty. Effect of World War II armed forces service on retirement benefits; payments to retirement systems for such periods. Powers of retirement, pension, or emeritus systems or funds with regard to agents employed to act as custodians of assets or investment advisers. Restrictions on ability of members of the General Assembly to receive pension plan credit for service in the General Assembly. Crediting of time toward Georgia Legislative Retirement System; restriction on crediting; options for members; refund of contributions; construction of conflicting provisions. Adoption, amendment, or repeal of rules by boards of trustees of state retirement or pension systems; procedure; immediate adoption; filing of rules with Secretary of State; adoption of rules and regulations appropriate or Article 2 Restrictions and Prohibitions on Membership in Public Retirement or Pension Systems 47-1-20. 47-1-21. Definitions.