Board Thread:Geometry Dash Gameplay Discussion/@comment-25699066-20150827235627/@comment-5722943-20150828003630

I'll try to explain it to you. That should be it ;)
 * 1) Select the blocks you want to move using Edit+Swipe.
 * 2) Hit "Edit Group."
 * 3) Find the box labelled "Group IDs" and hit the "Free next" button. Then click the "save" button.
 * 4) Place a Move trigger before the blocks.
 * 5) Click the "Edit Object" button.
 * 6) Set the Group ID to the number that your set of blocks was given.
 * 7) Customize Move trigger settings.