1. Create a shape in the design workspace. 
2. Go into manufacture workspace and create a contour operation. 
3. Post the contour with a supported post processor. 
4. Open the DragKnife add-on and open the saved contour g-code file. 
5. Click OK and a g-code file for drag knives is saved. 

Install:
The installer that ran when you downloaded this app/plug-in from Autodesk App Store will start installing the app/plug-in. Or, simply double-click the downloaded installer to install the app/plugin.

Uninstall:
You can unload the add-in without uninstalling it by clicking the "Stop" button when the add-in is selected in the list box on the "Add-Ins" tab of the "Scripts and Add-Ins" dialog.
Unchecking "Run on Startup" causes the add-in not to be loaded in future sessions of Fusion 360.
To uninstall this plug-in, exit the Autodesk product if you are currently running it, simply rerun the installer, and select the "Uninstall" button.
Or, you can uninstall it from 'Control Panel/Programs and Features' (Windows 7/8.1/10), just as you would uninstall any other application from your system

We highly recommend reading the detailed instructions before you use DragKnife! You can find the instructions here: https://www.pbmilltec.de/Produkte/DragKnife/

Multiple depth cuts are supported but has the restriction that the entry points must be set to a straight line and not to a corner.