Three data columns are needed: A group column (set data type to Group with ‘Column attributes’) with the levels for factor A, a group column with the levels for factor B, a group column with identifiers for the cases (subjects) and a column of the corresponding measured values.
Each subject must have exactly one entry for each combination of levels. Therefore, if you have M levels for factor A, N levels for factor B and S subjects, you need exactly MxNxS rows in total.
Other functionality is similar to the two-way ANOVA module.
Missing data are not supported!
Example data formatted for two-way repeated measures ANOVA:
