First, you have to click on the desktop app from the left menu of FBAS.
Then you have to download the Browser Cube application by clicking on the download button.
In the case of windows, you can download the windows version
When it is downloaded successfully then the browser cube will launch automatically.
Now in order to use browser cube you have to download and install java on your system.
So when you open the browser cube, you will see a download option, so click on the download button inside the browser cube then it will open the website in your browser for java.
Here, you have to download and install java on your system.
Once java is installed in your system, you need to click on the relaunch option in the browser cube or you can also close it and reopen it.
Once it is launched again you have to give your FBAS credentials so that the browser cube will automatically fetch all of your accounts from FBAS and here you can easily manage them manually