Use the CopyNested command to duplicate drawing entities that are contained in a Block or a Reference and place a copy of them at a specified location.
Based on one selection, you can create multiple copies. In addition, you can create a specified number of copies in a linear pattern (see Copying Entities in a Linear Pattern).
Optionally, you can force the copied entities onto the active layer.
To copy nested entities:
This option exits the command after you specify the displacement.
This setting is preserved during the current application session until you reset it.
The copies are placed in the specified positions. If the result of a multiple copy is unexpected, specify the Undo option.
The Pattern command is an effective tool to create multiple copies in a linear or circular pattern.
Access
Command: CopyNested
Menu: Modify > Copy Nested
Ribbon: Home > Modify > (Flyout) Copy Nested