Guest Login

I am new to elementary and trying to explore it. When I activate Guest, i log in and try to use default settings, when clicking the application and other features it doesn't allow or not showing any display., even the log off icon. Instead I try to switch back to admin by "window + L to log out but it also not responding. Not showing any display and even pressing "windows + lock" to go back to log in to select again the administrator. Unable to log out guest account, and use default settings like as newly install elementary. I am currently in the guest account and I wanted to take screenshot but still not working. I don't know if it is the feature of a guest account. If so do you have article about setting up a guest account. Thank you