When you add dynamic behavior to a block definition, you add flexibility and intelligence to the block geometry. Instead of being a fixed part of a drawing, a dynamic block reference can be changed or manipulated as you work in a drawing.
You use the Block Editor to add dynamic behavior to blocks. The Block Editor provides all the tools you need to add intelligence and flexibility to your blocks.
To make a block dynamic, you need to add specific elements to the block definition.
When you are finished adding elements to your dynamic block definition in the Block Editor, save the block definition.