To do this do the following:
1. Login to Member Pages and Navigate to your System & Admin --> Settings.
2. Click on Branding
3. Find Favicon and click on Add Image underneath of it.
4. Click Upload Image
5. Find your favicon image below and then click Select. It is recommended to add a small square image of type .png or .ico image for your favicon.
6. Click Save at the bottom of your page.
After saving it you should automatically see the favicon update upon page refresh.