The Position property retrieves or sets a value that indicates the position of the category-axis. The Index property returns the index of the category-axis (0-based). The Add method adds a CategoryAxis object to the collection and returns a reference to the newly created object. The Remove method removes a specific member from the CategoryAxes collection, giving its identifier. The Clear method Removes all objects in the collection. The Item property accesses a category-axis giving its index or key.