Choice List Relations allows the administrator to associate multiple choice lists and create a set of combinations. Additionally, link parent and child choice list values together in a single screen. Whereas Choice List, is a simple drop-down list from user or table driven values.
In this window, the administrator is able to manage the Choice List relations. Changes and additions to choice lists are immediately available within eCASE. This allows administrators to manage dropdown list values without having direct access to the form itself.
Navigate to Settings > Setup > Choice List Relations, to view all current Choice List Relations.

To create a new choice list relation:
Click New

Fill out the Name and optionally, enter a description for the new choice list relation.
In the Choice Lists field, click Add. A new window will appear, where you can select a choice list to add.

Select a choice list from the drop-down list, and click Add
Repeat steps 3-4 to add multiple choice lists. To create a choice list relation, you must add at least two choice lists.
If you would like your choice list relation to be active, select the checkbox for Active
Click Save when finished. Your new choice list relation will now appear in the list of all existing choice list relations.
If you would like to edit the name or the choice lists included in your choice list relation, or if you would like to activate/inactivate your choice list relation, select the choice list relation and click Edit
To manage the values in a choice list relation:
Select a choice list relation and click Manage Values

A new window will appear, where you can add relations between choice list values of the choice lists configured to be included in your relation. Notice that the columns in the window will correspond to the choice lists that you added to the relation when creating the choice list relation.

Click Add to add a relation

Select a value for each drop down list. These values will have a relation between each other.

Click Add when finished. The new relation will appear in the list of relations for the choice list relations

6. Repeat steps 3-5 as necessary to configure the relations between the choice lists configured in the choice list relation.