After clicking Axis manager on the Structural Axis dialog, the Manager of structural axes dialog displays:

The options in this dialog let you manage sets of structural axes. At the top, the dialog displays the names of defined structural axis grids.
After selecting a set of structural axes (
), clicking OK displays the structural axes of the set. When an axis set is cleared, clicking OK hides the axes of this set.
There are 2 buttons at the bottom of the dialog: