How to get and use the plugin

Download and install OBJ Exporter plugin for Fusion 360.

Launch Fusion 360 and Load a model.

Click the icon "Simlab OBJ Exporter"

Save dialog box opens. Specify a name and save the file to OBJ format.

Install:

The installer that ran when you downloaded this app/plug-in from Autodesk App Store has already installed the app/plug-in. OR, simply double-click the MSI to install the app. 

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\Programs and Features' (Windows 7/8.1/10), just as you would uninstall any other application from your system.

https://simlab-soft.com/3d-plugins/Fusion360/OBJ_Exporter_For_Fusion-main.aspx