When the module 'Profile properties at enrolment' is activated, you have the possibility to define profile properties (like the ones from the module 'Collaborators' profiles') linked to a specific enrolment (instead of general profile properties). These can be filled in by two different people:
Admin: on the moment he/she enrols a collaborator
Collaborator: when he/she puts oneself up for a job
Profile property at enrolment: Do you have a car at your disposal on the working day?
Normal profile property: Do you have a car at your disposal?