TLDR: The app's 'Optional Document Upload' feature allows adding extra documents after task completion, visible only once all tasks are done, and is entirely optional for forgotten or requested documents.
Optional Documents
If you need to add any additional documents once you’ve completed your tasks, you can do this on the app using the ‘Optional Document Upload’ feature.
Please note you will only be able to see this once all of your tasks are complete. It is entirely optional, and it’s only there in case you need to add any further documents. This could be if you’ve forgotten to add something, or if the organisation that’s requested the check asks you to do so.