Within the single tree / elements tool
you can place a cluster of the active elements via
SHIFT + Leftclick
or
CLUSTER ON via context menu.
For exact placement - especially with CLUSTER ON -
use
CTRL / TAB for rotation
BACKSPACE for the form (square or circular)
LEFT / RIGHT ARROWS for the size / range or diameter
and also
POS1 / END for the size.
The preview changes realtime, so an exact placement can be adjusted.
Then place with LEFT MOUSE, while still holding down SHIFT....
For rectangular unregular belts of elements please use the
BELT - tool .....