For rectangular arrays use the block method.
- draw an entity
- make it a block
- use Modify -> Properties and select the entity
- in the Properties windows you can enter number of X/Y entities and their distance
See 
https://librecad.readthedocs.io/en/latest/guides/blocks.html#from-an-existing-drawingFor circular arrays use the rotate methode.
- draw one entity
- use Modify -> Rotate
- select center, reference and destination
- in the Move window check Multiple copies
- enter number of copies (e.g. 11 for a clock, 30° rotation angle)
See 
https://librecad.readthedocs.io/en/latest/ref/tools.html#modifyMaybe not that comfortable, but with some experience surely faster than drawing one by one.
Armin
	
	
	
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