After installing the add-in, select "Import Idf" under the INSERT menu.

Specify input parameters and click OK. You will be prompted to select a board file (mandatory) and a library file (facultative). Once finished, you will get the geometry with components and keep out sections.

Supported files combinations are: .emn/.emp, .brd/.lib, .brd/.pro, .bdf/.ldf, and .idb/.idl.

Input parameters are:

•     import pcb only: yes/no
•     holes to create: component pin, conductive via, mounting purpose, tooling purpose, other
•     PCB color: green, red, black, blue, white, yellow, violet
•     component color: all grey or according to the standard reference designators (see below)
•     create an individual component: yes/no
•     capture design history: yes/no
•     anonymize component: yes/no

Standard reference designators supported for component color are: C, CN, CONN, D, F, IC, J, JP, K, L, P, Q, R, RN, RT, RV, U, VR, X, XT, XTAL and Y (see https://en.wikipedia.org/wiki/Reference_designator)

Colors can be adjusted by editing the idf.adsklib in the resources/materials folder (use the "MODIFY > Manage material property" menu). 

https://autode.sk/2st36Sa

https://autode.sk/2sBLQJL

Install:
1. Download the installer from Autodesk App Store.
2. Right-click on the "Downloads" folder and select "Open in Finder".
3. Right-click on the "ImportIDF_macos.pkg" -> "Open With" -> "Installer".

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.
- Navigate to the ./ApplicationsPlugins folder and select the app bundle you want to uninstall
- Either drag the app bundle to the Trash or right-click and select “Move to Trash”
- Right-click on the Trash-Can and select “Empty Trash”
- If you prefer keystrokes, you can also just select the app bundle and then hit Command+Delete to move the app to Trash, then empty the Trash and the app will be removed.

The add-in supports IDF version 2.0 and 3.0:

https://www.simplifiedsolutionsinc.com/images/idf_v20_spec.pdf
https://www.simplifiedsolutionsinc.com/images/idf_v30_spec.pdf

The add-in doesn't support IDF files that contain panel.

The import process can become slow if:

• capture design history is set to yes
• component pin or conductive via are selected in the drilled holes parameters