How to find the 'Self' category so we can include our interviewees?

Question

Hi, we interviewed several directors for our documentary and we'd like to list them as 'Self'. Not under 'Actress' or 'Actor' but as 'Self'.

Peter_pbn · Accepted Answer

Put them in the cast and start the character name with Self. They are automatically sorted as Self on their name pages.

How to find the "Self" category so we can include our interviewees?