As a general rule, you could call the clergy member either Pastor or Reverend. Like with any social activity, a person will tell you if they prefer you use a different title. For example, some male Episcopal clergy prefer to be called Father (or Mother, if female).
Richard Allen
what was the meeting in Philadelphia call
The Bishops meet in a collective body called 'The Episcopal Conference' or 'Conference of Bishops'.
A public meeting
finance minister
une réunion "meeting" is used for political meeting
Secretary of the meeting. Secretary of the Board Meeting
The prime minister is chosen by colleagues at a post election Cabinet meeting where most portfolios are decided.
A meeting might be called by an individual or by an organization
Many hundreds are freemasons. I have one Episcopal and one Methodist minister in my lodge. Many Baptists ministers are freemasons.
A seance !
They made this denunciation In a meeting with the prime minister David Cameron.