I. Ecumenical
Bishops all over the world meet together to deal with faith and pastoral problems.
Councils that are admitted by our church are:
1- Council of Nicea: (325 A.D.) that dealt with Arius who denied Christ's divinity.
2- Council of Constantinople: (381 A.D.) because of Machdonius who denied the divinity of the Holy Spirit.
3- Council of Ephesus: (431 A.D.) because of Nestorius who separated between Christ's divinity and humanity.
Copts had an effective role in these councils.
II. Local
The local councils are probably representing the local church in Egypt where the Pope is used to meet with the bishops of Egypt, (Libya and Ethiopia) regularly, to discuss pastoral and doctrinal affairs.
See "Synod, Holy"
Dictionary of church terms. — St. GEORGE'S COPTIC ORTHODOX CHURCH SPORTING - ALEXANDRIA EGYPT. Fr. Tadros Yacoub Maiaty.