Upon the request of an authority, the commission may act as a pooling agent in the issuance of bonds for the benefit of small businesses, when it is more expedient for the commission to do so, or at the request of the local authority, or both. As a pooling agent, the commission shall issue pooled bonds pursuant to Sections 91520, and following, of this code, based on a combination by the commission, or by an authority, of small business loan requests. Pooled bond issues shall be in multiples of one million dollars ($1,000,000).