You can create reference lists to define the options that are available to select when used in a list field.
On the Reference Lists page, you can Edit or Delete a reference list by clicking the menu button to the right of a reference list and selecting the relevant option.
If you want to edit responsibility rule permissions on a reference list, click the name of a reference list to open the Details page. Then, click the Responsibilities tab and on the Responsibility Type Assignment panel you can edit the responsibility rule permissions.