Main Pane
ROWS
The green row content is derived from the Expanded WBS.
To add blank white row(s) BEFORE, select one or several white rows and press Ctrl + L; this inserts as many rows as selected.
Alternative tool: bar Home>Edit>Insert>Insert Rows Before OR context menu Insert before.
To add blank white row(s) AFTER, select one white rows and press Ctrl +↓; this inserts as many rows as↓ is pressed.
Alternative tool: bar Home>Edit>Insert>Insert Rows After OR context menu Insert row(s).
Take care not to right-click twice.
COLUMNS (Layout)
As this is done in normal mode, any user can create his/her own layout.
To add a custom column, refer to How to Create Free Columns with Custom Behavior and How to Add Columns.
Bottom Pane
Refer to How to Build the Bottom Panes.