How to hide prefab behind icon so it does not open unless the icon is clicked?

I have a prefab menu feature in project that I am working on. I love how it looks and works, except that it is always showing. Is there anyway of hiding it within an icon, so the user only sees the icon unless they click on the icon, which would then open the menu? I feel that always having the menu popped up is distracting. When placing the prefab in my environment, it just shows the icon I chose, but once I play my project, it shows the whole menu popped up at all times.