Yes, these chords are like the lesson in B , but we're starting with G#m, as it is the relative minor of B major. Now, the D# minor chor...

In G#: G# , A#m, B#m or B#, C# , D#, E#m, (not used here: F##dim). In Ab: Ab, Bbm , Cm or C , Db, Eb , Fm , (not used here: Gdim).