Changing the default units while importing .step file in GUI

Hi All,

I've imported a .step file in Gmsh's GUI. The actual unit of values in the step file is in micrometers, but the default unit mm is set after import. From the tutorial available here, I understand the default can be changed using the command gmsh.option.setString('OCCTargetUnit', 'uM')

However, I am not sure how to change the same in the GUI. Suggestions will be really appreciated.