tbone, remove the dummy side cap and pull out the pin. Amazingly it was that simple! If you decide you want to change back to the original look, just pull up one notch.
I'm 5'9" and I find this lower setting much more comfortable.
Sold - 2014 F01 750Li xDrive CBM M-Sport
Sold - 2013 E92 M3 SS w/ ZCP l ZPP l 2MK l 6NR l 752
Sold - 2009 E92 335i LMB M-Sport
Sold - 2003 E46 M3 LSB SMG