1. First, we open the cad software, find the insert option at the top of the interface and click it.
2. Click Insert to find Insert dwf Underlay, and then click.
3. Then we find the dwf file that needs to be opened and click Open.
4. Then we click OK.
5. Then we specify any point as the insertion point.
6. Make sure to enter the insertion ratio so that cad can open the dwf file.