Step 1: Navigate to the File manager tab under the SYSTEM menu within Kodi.
Step 2: Choose the Add source function on the right side of the window.
Step 3: Click on the text box that displays <None> under the Enter the paths for the media locations heading.
Step 4: Using the on-screen keyboard, input http://fusion.tvaddons.ag and then press the Done button.
Step 5: Click on the lower text box under the Enter a name for this media source heading.
Step 6: Using the on-screen keyboard once again, input fusion and then press the Done button.
Step 7: Finally, click on the OK button at the bottom of the Add Files source window in order to complete the Fusion Installer setup process.
