Meetings can be formal - with a defined organisational membership, an agenda, a regular time, written minutes etc - or informal - a group gossiping, staff who are smokers chatting together outside the premises.
Formal organizations probably adhere to Robert's Rules of Order, the standard compendium used in conducting meetings, electing officers, describing those offices and the duties thereof.
The Beaver Hall Group, the Montreal based assemblage of Canadian painters formed in May of 1920 by artists who had met while studying art at a school run by Art Association of Montreal
A formal organisation structure shows a recognisable chain of command, it also has many levels of management. This make comunication slower and decision making harder to implement.
An informal...
A Typology of Norms
Informal: Relative weak informal norms are folkways and fashion: - Relatively strong norms are Taboos such as incest and Mores
Formal: - Relatively weak formal norms are:...