Grid Squares
The 'Grid Squares' menu-item refers to Grid Locator items in the Main Log only. The Main Log has its own tab-page for its Grid Squares: the 'Main Log Grid Squares' tab, which contains a table of all unique Grid Squares in the Main Log, with columns for each Band in the log. Each cell entry shows the callsign, date, time, and QSL status of the first QSO on that band for that Grid Square. A right-click menu for each cell is also available.
Click the 'Grid Squares' menu-item to open a number of menu sub-items: 'Plot All Main Log Grid Squares', 'Plot Confirmed Grid Squares', 'Plot Unconfirmed Grid Squares', 'Plot Grid Squares By Band'.
Each is described in detail on its own help-page.