enroll
/ɪnˈɹəʊl/
To enter (a name, etc.) in a register, roll or list
To enlist (someone) or make (someone) a member of
They were eager to enroll new recruits.
To enlist oneself (in something) or become a member (of something)
Have you enrolled in classes yet for this term?
To envelop; to enwrap.