[Koha] Multiple level approvals for suggested titles and multiple levels late fee/fine slab

Dear All, Anyone has customized the Koha for multiple level approvals of suggested titles from the patrons/faculty in Acquisition module? In our library, we need multiple level approvals such as from the Head of Department and Chairman, Library Committee/etc. We also want to use multiple levels late fee/fine slab. Currently, Koha supports only one late fee slab. We would appreciate any comments or suggestions that will help us to tweak the koha. With Regards Manju Naika,PhD Asst.Librarian,IITB