Internship/Thesis Settings / Internship/Thesis Settings / Internship and Thesis / Internship Settings / Allow selected user types to accept Students applications
Here you define which user types can accept Students applications
Setting -> Companies, Supervisors
Accept and Reject actions are available in enrollment management for both Companies and Supervisors.
Setting -> Supervisors
Accept and Reject actions are missing in enrollment management for Company user types and only available to Supervisors.