Actors are indirections between the processes and entities of the organization. They are used to define the candidates who can perform a given human task.
"The user who performed the previous task" or "The manager of the user who did the previous human task" are actors too ; but since they are not directly linked to the organization, they are called "Actor filters".
Technically, they have the same structure than connectors. Bonita provides some actor filters, and developers can create their own.
Discover more in the following pages.