I believe the congregation laying hands on and anointing a leadership is as viable and Biblical as Apostles or anyone else doing so.
Holy Spirit has certainly demonstrated He agrees with His ‘signs following’ both varieties of formal anointings.
I consider the congregation laying on hands to be an “election” of the candidate. The Apostle then comes and lays his hands on the man elected by the community, to give him Apostolic authority, or part thereof.
I could certainly understand the Holy Spirit giving His supernatural gifts (tongues, prophesy, etc.) in abundance to the man chosen by the community to serve them. He will always take care of His Church.