draw as big of a led array as you can stand, and then use cut and paste to copy it.
step 1: draw up your leds
step 2: group them using the GROUP command
step 3: cut them (really means copy) - CUT command
step 4: either left click your group or click on the GO icon
step 5: paste your copied parts with the PASTE command
step 6: repeat the PASTE command as many times as you need
my tip for you, cut and paste works well for parts, but don't use it on nets ... if you draw your led array and wire it, and then try to cut and paste, your net names will get duplicated (and connected invisibly), so unfortunately you'll still have to net and junction your array once you're done with the layout.
mass-move is also done with the GROUP command, after you group, right click and drag to move the group. group remains after moving, and even if you move parts in the group, they'll still move with a right click and drag
only way to break a group is to group something else, even just a single part.