Cast member is listed as 'self' when should be listed as 'actor' in a film which is a documentary containing dramatisations

Cast members are listed as 'self' when they should be listed as 'actor' in the film which is a documentary drama. The movie is predominantly a documentary but contains drama scenes (dramatisation re-enactments of witness testimony) so I am wondering how this can be changed. It is not accurate to be listed as self and I am wondering if this is a default setting issue within the IMDb platform?

Cast members have raised concerns over this incorrect description. They should be listed as actor or actress and not self!

Any advice to help change this as soon as possible would be greatly appreciated.