Specify the factors for Create General Full Factorial Design

Stat > DOE > Factorial > Create Factorial Design > Factors

Complete the following steps to specify details about the factors in the design.

Under Name, enter a descriptive name for each factor. By default, Minitab names the factors alphabetically, skipping the letter I.
For each factor, specify whether the factor is text or numeric.
For each factor, enter labels for the values of the factor levels.