• List all sheets in active workbook.
• Click the sheet in Object Manager will activate the corresponding sheet in workbook.
• Right click for common operations, such as Delete, Insert, Add, Move, Copy, Rename, etc.

The quickest way to open Worksheet Properties dialog is by double clicking gray area to the right of column area.

But for worksheet with many columns, it's hard. And using Format: Worksheet... isn't that convenient.

So in Origin 2020, we added Properties... context menu when right clicking sheet tab or right clicking the upper-left corner of worksheet. 

The context menu on upper-left corner of worksheet is also more compact now. Some old menus are removed from there.