The layout of the key can be changed from the default vertical layout. To edit the key;-
On the main menu bar, select Key > Edit Key Properties. The Edit Key Properties dialog opens.
(Optional) Edit the key title.
(Optional) Layout of Key Entries: Select between Single Row, Single Column or Multiple Columns.
If Multiple Columns is selected then enter the number of columns and if they should have equal width.
Alternative sources of explanation: