agendar
schedule
agenda
a list or plan of things to be done
+
-ar
verb suffix
Agendar means to schedule and can be thought of as agenda0 (a list or plan of things to be done0) + -ar1 (verb suffix1).
verb
- scheduleTo schedule or set an appointmentNecesito agendar una cita con el médico. // I need to schedule an appointment with the doctor.