Once you have logged in to the portal, head to the top right hand corner and click on the face account icon. This brings down the menu where you need to select 1. "General Settings".
The next page you will find on the left hand side at the bottom a section for the logo and just click on the Choose file button and add your chosen logo. Formats accepted are:
.jpg, .png or .gif
Max file size is 5MB
The image will be scaled to fit within the header area.
If you choose to print any jobs or sheets your logo replaces the default RAM logos.