The job included organizing suitable activities according to their age, capability and wishes.

according 是动词 accord 的现在分词形式，accord 的意思是"一致、符合"。 to 是介词，表示"对于、依据"。 according to 是一个固定搭配的介词短语，意思是"根据、按照"，用于引出依据的来源或标准。