Allow requesting of signature for both manager and employee for documents attached to a logbook

At the moment, if you attach a document to a logbook you can request a signature on that document, which is great. However, when you select this, it requires and employees signature but default's the manager signature to not required.

When adding documents to logbooks that usually have both signatures, for example one to ones, it would be useful to be able to select both.

At the moment we are working around this by adding the document separately, but it would be more efficient if we could do it all from the one screen.