the execution of the applicable supplemental indenture and entitled to the benefit of such provision nor (B) modify the rights of the holder of any such Indenture Security with respect to such provision or (ii) shall become effective only when there is no such Indenture Security outstanding; (f) to secure the Indenture Securities pursuant to the requirements of any provision in such Indenture or any indenture supplemental thereto or otherwise; (g) to establish the form or terms of Indenture Securities of any series as permitted under the Indenture and, in the case of the BFI Senior Indenture and the Other Indentures, if required, to provide for the appointment of a co-trustee, and in the case of Other Indentures, to provide for the appointment of other agents; (h) to evidence and provide for the acceptance of appointment under such Indenture by a successor trustee with respect to the Indenture Securities of one or more series and to add to or change any of the provisions in such Indenture as shall be necessary to provide for or facilitate the administration of the trusts thereunder by more than one trustee (or other agents, in the case of Other Indentures), pursuant to the requirements of such Indenture; (i) to add to or change any of the prov