You can duplicate an existing regular expression or block list entity type and edit it to expedite creating additional entity types. For all other entity types, the duplicate feature is unavailable.
Select Content.
Select Entity types.
Locate the entity type you want to duplicate.
Click the ellipses (…) at the end of the row.
Select Duplicate.
Select Yes when prompted to verify you want to duplicate the entity type.
The entity type is duplicated with “-COPY” appended to the name. Edit the name as needed and select the check mark icon to save the new name.
Make additional edits to the entity type as needed.