1. A management system comprising: a network interface that is communicatively coupled to a storage device; a memory; and a processor communicatively coupled to the memory and the network interface; wherein the storage device stores: a plurality of meta-rules, including a first meta-rule, wherein each of the plurality of meta-rules indicates a correspondence relationship between a cause event related to any one of a plurality of types of managed objects, and one or more influence events related to any one of the types of the managed objects, where the influence events are a condition that resulted in the cause event; and for each relation indicating a connection relationship between two types of the managed objects, changes frequency information indicating a change frequency related to the relation, and wherein the processor: forms a first relation group related to the first meta-rule, wherein the first relation group is a combination of one or more relations indicating a connection configuration between a particular type of the managed objects related to the cause event of the first meta-rule, and each type of managed objects related to one or more influence events of the first meta-rule, divides the first relation group into one or more second relation groups, wherein the one or more second relation groups include relations where the change frequency is equal to or larger than a predetermined value, wherein the predetermined value is determined based on the change frequency concerning each of the one or more relations in the first relation group, divides the first relation group into one or more third relation groups, wherein the one or more third relation groups include relations where the change frequency is less than the predetermined value; and divides the first meta-rule into one or more second meta-rules corresponding to each of the one or more second relation groups and one or more third meta-rules corresponding to each of the one or more third relation groups.