Presidium of the Bundestag

The Presidium of the Bundestag is responsible for the routine administration of the Bundestag, including its clerical and research activities. The presidium consists of the President of the Bundestag and a variable number of Vice Presidents, currently six.

The president is elected by all members of the Bundestag during its first meeting; he almost always comes from the largest fraction in the Bundestag (tradition has made this a sort of an unwritten law). His administration ends with the end of the legislature, but he can be re-elected, as long as he is re-elected to the Bundestag.

In 1994 it was decided that every faction in the Bundestag should be represented by a Vice President.

...
Wikipedia