To Define the Data Type and Formatting of a Table Row
Click Home tabAnnotation panelTable Style. Find
In the Table Style dialog box, do one of the following:
Click New. In the Create New Table Style dialog box, enter a name for the new table style. In the Start With box, select a table style to provide default settings for the new table style. Click Continue.
Click Modify.
In the New Table Style dialog box or Modify Table Style dialog box, click the General tab under Cell Styles.
In the Properties section, click the ellipses button [...] to the right of Format.
In the Table Cell Format dialog box, set the data type, format, and other options.