You can either watch the below video or read the step by step guide.
Before the update you could only upload documents up to 10 MB in size. Now we have increased the size of uploading documents to 20 MB.
Important: It is important to understand that your internet must be at a decent speed for files this size to be uploaded within a 17minute timeframe. If it isn’t then after 17minutes the process will time out and you will receive an error.
This change affects all screens and processes where documents can be uploaded.