The answer depends on the constitution of the organisation. The chair may be appointed, may be elected in an open vote or by secret ballot of some or all members. There mat be a minimum number (quorum) required.
On the basis of seniority.
It depends on the committee. If it's a powerful committee, or has prestige to it, then it will go to either the most powerful, the most clever, or who was owed a favor.
If it's a working committee, or small time, or lacking in prestige, then it will be given to either the least favorite member, or the one with the least seniority, or as a mean joke to someone who doesn't realize that it's just a bunch of work, not an honor.
By way of example, picture who will likely Chair the House Ways and Means Committee, versus who will likely Chair the Church Bake Sale Committee.
From the majority by the party caucus.
Each committee usually holds elections to select a chairperson. The chairperson only has to meet certain prescribed minimal qualifications to vie for a chairperson's seat.
senioirty
The seniority rule was used until the mid-1970s. Committee chairs are now chosen by the majority-party members.
In the United States, a committee chairperson is typically chosen based on seniority. The country's first Senate committee was created in 1789.
A committee chair person is nominated. The nomination is then seconded. There is then a vote among the committee to elect a chair person.
Chairpersons are usually nominated by the committee. If there is more than once nominee, it's put to a vote.
Party Caucus
Usually by seniority.
seniority
Get appointed to a committee. Sooner or later you will be chosen as the chair of the committee, and voila!
the committee chair
the committee chair
the committee chair
Committee chairmen are chosen based on seniority, expertise, and party affiliation in the U.S. Congress. In general, the majority party in Congress selects committee chairmen, usually based on recommendations from party leaders. Chairmanships can also be influenced by internal committee rules and traditions.
a chair
I will assume that cimmitteis is a misspelling of committees. The chair of a committee is the head of the committee and facilitates its meetings.
This should be dealt with in the Association's Constitution. There are countless examples on line. The Chair, along with the other Officers and Committee are chosen at the Annual General Meeting.
A Chairperson?
They are chosen by the leaders of the house and senate.
California.
Chair.