Menu: File→Data Files→Grouping Variable
Specifies a variable to be used for determining membership in the group that is selected in the listbox. For example, if the data set contains a gender variable that takes on values "male" and "female", the choice of gender as a grouping variable would allow the restriction of group membership to males only or to females only.
Programming
To obtain a reference to this button in an Amos program, use the method GetButton("Dbfile", "btnGroupingVariable").