To upload the completed Attending Physician's Report and any associated bills directly into the patient's case file using ECOMP, the user must first log into their ECOMP account. Once logged in, they should navigate to the 'Medical' tab and select 'Attending Physician Reports' or 'Bills'. The user can then upload the documents by clicking the 'Add' button and selecting the file(s) to upload. It is important to ensure that the document(s) are in a compatible format, such as PDF or TIFF.