To access lookup codes, go to Administration > Settings > Lookups.
From the content menu, you can access the groups and entities whose lookup codes you want to view.
Most of the lookup codes are non-editable, but there are some which are editable.
For the editable lookup codes, you can also update the translations, mark a particular code as default, and delete a code.
To edit, click . For such lookup types, you can add new codes by clicking .