Relations allow users to associate users to cases, or cases to other cases. Once relations are created and associated with a workflow, users can choose to associate a case with another case, or associate additional users with a case.
Let’s look at two examples of how both types of relations work.
Case to Case relations allow users to associate one case with another case. A common example of the use of case to case relations is in onboarding, in which a master case can have a number of smaller tasks that are resolved by different people. The Onboarding case can have a relation to other cases such as performing the background check, scheduling new hire orientation, and ordering equipment.
Once a Case to Case relation has been created, a case relationship can be created under the Related Cases section of the original case.

User to Case relations allow users to add additional users to a case, and assign a role to the user. This might happen if, for example, a case has a team of multiple people tasked with its completion. Each user can be assigned a role, which associates them with a specific relation type.
Users can be associated with a case under the Team section of the case.

Both types of relations are managed in the Relations page, which can be accessed under the Case Management menu in the Setup screen.