Add and Remove Rows / Columns

Add Rows

To add a row to your table, click in a cell on the row next to where you want to add a new row, then click Insert Row on the Table Layout tab. On the sub-menu that appears, you can choose if the new row will appear above or below the current row:
Add Row Above
Add Row Below

Remove Rows

Select a row by clicking in one of its cells. You can select more than one row by holding the Ctrl key and clicking in a cell on every row that you want to remove.

Click the Remove Row button on the Table Layout tab. This will remove all rows containing selected cells.

Add Columns

To add a column to your table, click in a cell in the column next to where you want to add a new column, then click Insert Column on the Table Layout tab. On the sub-menu that appears, you can choose if the new column will appear on the left or the right of the current column:

Add Column Left
Add Column Right

Remove Column

Select a column by clicking in one of its cells. You can select more than one column by holding the Ctrl key and clicking in a cell in every column that you want to remove.

Click the Remove Column button on the Table Layout tab. This will remove all columns containing selected cells.

Locking Table Size

When you add rows and columns to an unlocked table, the table will get bigger. If you want your table to remain the same size when you add rows and columns then you can lock it first.

To lock the size of a table:

Select the table.
Click the Measurement and Locking button on the Page Status Bar at the bottom of the screen.
On the dialog that appears, tick Size and Position.

Unlocked table:

Locked table:

Note: You can also open the Measurement and Locking dialog by clicking 'Edit Table Measurements…' on the 'Table Layout' tab or 'Measurement…' on the 'Cells' tab.