§ 193. Authorization to municipalities to adopt necessary local laws, ordinances or resolutions. Any municipality is hereby authorized and empowered to adopt and amend a local law, ordinance or resolution providing for supplemental retirement allowance payments both to local retired employees thereof and local retired teachers of a school district located therein. Any such local law, ordinance or resolution shall provide an equitable method of computing the amount of such payments. The supplemental retirement allowances paid to local retired employees shall not exceed the supplemental retirement allowances paid to state retired employees pursuant to this article. The supplemental retirement allowances paid to local retired teachers shall not exceed the supplemental retirement allowances paid to state retired teachers pursuant to this article. Any such local law, ordinance or resolution may contain provisions necessary and appropriate for the proper administration of such supplemental retirement allowance payments, including a provision requiring the filing of verified applications for such payments.