To define a Multiline Text attribute:
On the Category page, click Text: Multiline in the Add Attribute drop-down list.
On the Add Attribute To page, type a name for the attribute in the Name field.
In the Rows section, do the following:
Click the name of the attribute after which you want the new attribute to appear on the Category page in the After drop-down list. Click <None> to set the attribute to appear first.
Select or clear the following check boxes:
Type a value in the following fields:
On the Category page, type any default values for the attribute.