To Add or Edit Text in a Table

Do one of the following:

Double-click the cell in which you want to add or edit text.

or
Right-click the cell and select Edit text.

or
Select the cell and press <Enter>.

or
Select the Edit text tool ( Drawing > Annotate > Text > Edit Text ) and then select the cell in the table.

The Text Editor window opens.
Add or edit text in the Text Editor window.
Do one of the following:

Enter a data point.

or
Press <Ctrl+Enter>.