Watch the Leaving the Barre online guitar lesson by Brad Carlton from Chord Studies: Power Chords Vol. 1
Here we have a I-V in the key of D. We will finger the D5 chord using fingers three and four on the top two voicings instead of barreing. We do this so that we don't have to disturb the first string when moving to the G5. All you have to is switch out your third finger for your second finger, leaving the high D note intact.