Skilled Worker Visa Application

I have gotten the COS from the employer in the UK, and in the middle of applying for the Skilled visa. I already filled the application form online with the all data, but now i was tot edit it before paying the application fee + IHS fees, but it seems, i can’t edit. I have spelling error on the name of my father. Anyone has experience with the “Skilled worker VISA”. Also, where do i submit he documents like medical certificate and English certificates?

anyone can help with this question?

Apply from the beginning again