How are resource definitions organized?

Resource definitions held on the CSD are organized into groups and lists.

Group
A collection of related resources on the CSD. Each resource that you define must belong to a group; you cannot define a resource without naming the group.
List
The names of groups that CICS® installs at an initial or cold start. You can add groups to lists if you want them installed at an initial or cold start, or if it helps you to manage your groups better. Groups do not have to belong to lists, and can be defined independently.