By using the filter button in the top header you can choose which registrations to display on top of your drawing.

When you enter the filter, a list of all your types is first displayed 

• Here you hide/unhide all your issues or checklists

After the each type get the following options 

• Hidden symbols
  • This exposes all closed symbols in extra to the ones you already see on the drawing.
• Assigned to me 
• Created by me