The Typika is a service that is conducted when a priest or bishop is not present. Typically, it is a service led by a deacon although forms of the service can be led by laymen. When held in a church the doors of the iconostasis remains closed and the service is conducted in the nave.
This Typika service is a form of Pre-Sanctified Liturgy held by a deacon authorised by the local bishop, when a priest is unavailable. The deacon distributes communion to the faithful present at the service. It should be noted that while this service is blessed in some jurisdictions, it is not universally accepted, nor is it of ancient origin. However, the idea of deacons bringing communion to those unable to attend the liturgy is an ancient custom, and so it can be argued that this ancient custom provides the basis for this more recent practice.
This Typika service is held in monasteries and sometimes in parish churches, sometimes instead of Divine Liturgy, sometimes immediately before Divine Liturgy. The text for this type of service can usually be found in the various Liturgicons.
This Typika service is a specific form of service which mirrors the Divine Liturgy. It is used when a priest is not available or when a worshipper cannot get to a church. It is led by a deacon, subdeacon, reader, chanter, or the eldest experienced layperson present, in that order, unless a bishop or priest determines another leader.