Handbook of ROCOR Liturgical Practice:

How is the standing candle positioned during the Entrance Prayers at an Hierarchical Liturgy?

The standing candle, which is lit throughout an Hierarchical Divine Liturgy and normally stands in front of the icon of the Theotokos on the north side of the Royal Doors, is brought to the entrance of the Temple for the greeting of the Bishop. A server carries it and stands with it during the greeting (with the Deacons, holding the trikiri and dikiri, facing the Bishop); then, when the Clergy and the Hierarch process to the amvon for the Entrance Prayers, the candle-bearer takes the candle ahead of them, replaces it before the icon of the Theotokos (i.e. in its usual place) and himself re-enters the Altar, retiring from any further activity until the beginning of the Hours.

This candle is lit just prior to the Bishop’s arrival in the Temple, and remains lit until he departs.