"Different methods" refers to various ways or approaches to do something or solve a problem. It means using diverse strategies, techniques, or processes to achieve a desired outcome. Full definition
There are a number of different methods of communicating with parents, including via the traditional picking up of the phone. (qaeducation.co.uk)
Each insurance company, however, has different features, including additional coverages and discounts, and each company uses different methods of determining rates and premiums. (homeguides.sfgate.com)
There are a lot of different methods for getting a free hotel stay. (uponarriving.com)