Toastmasters meetings are substantially enriched by enthusiastic and informative functionaries. The President and Sergeant at Arms are elected for one year. Otherwise, club members have an opportunity to perform different roles each week. This is what they should be doing . . . .
President
The club President declares the meeting open with a brief address and, afterwards, having presented any awards or tokens of gratitude, closes the meeting with club notices and announcements.
Toastmaster
The Toastmaster has one of the most challenging roles, responsible for seamless continuity of the entire meeting and for introducing all participants.
Sergeant at Arms
The Sergeant at Arms arrives early to set up the venue and ensure that all equipment and literature is available. During the meeting, introduction of guests is another formality.
Timekeeper
The Timekeeper helps everyone adhere to allocated timings, a vital skill in all forms of public speaking and communication. Signalling by visual and audible means, they let each person know when they approach or reach the limits.
Linguist
The term Linguist, as oppose to Grammarian, is someone who studies to understand how language works as system from a scientific point of view (linguistics). As well as choosing a "word of the day" that all performers will attempt to use during the meeting, the Linguist comments positively on the flow of language and commends those speakers who've been particularly eloquent - highlighting techniques, including grammar and figures of speech that they've incorporated.
Topics Master
The Topics Master's job is to get people thinking on their feet by calling upon volunteers to stand centre-stage, for about a minute, to speak on a surprise topic, question, theme or scenario.
Topics Evaluator
The Topics Evaluator's job is to provide helpful feedback to the topics speakers, briefly commending their strengths and suggesting a possible area for improvement.
Evaluation is not just for the benefit of the speaker who is under the microscope, or a functionary. Everybody in the room can benefit from the remarks of the evaluator.
Evaluator (of prepared speeches)
Each speaker is assigned an evaluator who provides structured, formal, feedback. This usually involves a minute of recommendations sandwiched between two minutes of commendations. The individual speaker learns of personal achievement and the audience learns to emulate the high points and suggested improvements.
General Evaluator [GE]
The General Evaluator - often a visitor from another club - considers: the venue, the greeting, the ambience, the roles performed by all the functionaries listed above. The GE presents an unbiased opinion of all that transpired during the meeting - following the commend, recommend, commend formula.