How to hide completed documents in Adobe Sign app?

So we have a therapy office that we are trying to switch over to electronic paperwork.  The only part that I am having difficulty with is when we have a client that needs to fill out and sign our paperwork in office.  We have Samsung tablets and I have been able to lock the tablets so the clients can not go anywhere but the app that we want open. So I can lock the tablet to the Adobe Sign app, however there is still one big problem with privacy, the client could potentially snoop around and see all of the completed documents associated with our Adobe account. Since I have to be logged in to my Adobe account to be able to do the "get in person signature" feature, and our form is long enough that they can not just stand at our desk to be monitored, I need a way to hide all my documents associated with my Adobe account. Please help.