The board shall allocate an amount of at least $250,000,000 and not more than $1,000,000,000 to the program. Funding for each investment manager shall come from assets allocated within the main fund, similar to or most closely related to the investment manager's mandate. The maximum number of investment managers in the program at any one time may not exceed 10, except that the program may be implemented and run with less than 10 investment managers.