SAVE & LOAD - MAP NAME

Hi is any one able to make a visual demonstration on How to Save a level with Game Instance and then load it up with UMG on button press. What I need is to set up Game Instance on Event Play to save my level and then exit to Main Menu and load saved Map name from game instance with my UMG widget on button press.

1: Save the game to Game Instance (Maybe with: Get Level Name node) or what ever is better way
2: Exit with Main Menu UMG button widget
3: Load the Saved game inside Game Instance with UMG on button press.
4: Help me lord.

God Bless you!!!