Open up a Bible with Interlinear capabilities (e.g., ESV or NASB95) and turn on the Interlinear pane.
Find an interesting Greek or Hebrew word and right-click on the blue highlighted MSS, lemma or Morph.
The menu pops up with one of the tabs in the right side selected. Generally it defaults to whatever tab you had selected last time you used this menu. But it should be smart about selecting the MSS or lemma or Morph tab if you right-clicked specifically on the MSS, lemma, or the Morph line in the Interlinear pane.