expenses (whether direct expenses or shared expenses allocated proportionally), and permits, but does not require, the pooling of some or all of the assets of the two plan components for investment purposes, and (ii) that the assets of each of the two plan components shall be held, invested, reinvested, managed, administered and distributed for the exclusive benefit of the participants and beneficiaries of each such plan component, and in no event shall the assets of one of the plan components be available to pay benefits due under the other plan component. (4) Not a termination event Notwithstanding section 4041A of the Employee Retirement Income Security Act of 1974, an amendment pursuant to paragraph (1) to incorporate the features of a composite plan as a component of a multiemployer plan does not constitute termination of the multiemployer plan. (5) Notice to the Secretary (A) Notice The plan sponsor of a composite plan shall provide notice to the Secretary of the intent to establish the composite plan (or, in the case of a composite plan incorporated as a component of a multiemployer plan as described in paragraph (1), the intent to amend the multiemployer plan to incorporate such composite plan) at least 30 days prior to the effective date of such establishment or amendment. (B) Certification In the case of a composite plan incorporated as a component of a multiemployer plan as described in paragraph (1), such notice shall include a certification by the plan actuary under section 432(b)(3) that the effective date of the amendment occurs in a plan year for which the multiemployer plan is not in critical status for that plan year and any of the succeeding 5 plan years. (6) References to composite plan component As used in this subpart, the term composite plan includes a composite plan component added to a defined benefit plan pursuant to paragraph (1). (7) Rule of construction Paragraph (2)(A) shall not be construed as preventing the plan sponsor of a multiemployer plan from adopting an amendment pursuant