How to upload documents Step 1: Log into Trussle and open the 'Your documents' tab. Step 2: Click on the document you'd like to upload. Step 3: Click in the 'Add your documents' box. Step 4: Select the document you'd like to add. Step 5: Click to open your document. Step 6: When your document has finished uploading click 'Go Back'. Repeat steps two to six until all your documents are uploaded. Step 7: When you have uploaded all your docs, click 'Submit my documents'. Once done your dedicated adviser will be in touch about next steps.