You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
United_Methodist_Church

Context:
Another position in the United Methodist Church is that of the lay servant. Although not considered clergy, lay speakers often preach during services of worship when an ordained elder, Local Pastor, Associate Member or deacon is unavailable. There are two categories of lay servants: local church lay servant, who serve in and through their local churches, and certified lay servants, who serve in their own churches, in other churches, and through district or conference projects and programs. To be recognized as local church lay servant, they must be recommended by their pastor and Church Council or Charge Conference, and complete the basic course for lay servant. Each year they must reapply, reporting how they have served and continued to learn during that year. To be recognized as certified lay servant, they must be recommended by their pastor and Church Council or Charge Conference, complete the basic course and one advanced lay servant course, and be interviewed by the District or Conference Committee on Lay Speaking. They must report and reapply annually; and they must complete at least one advanced course every three years.

Question:
Local church and certified  are two types of what?

lay servants