Select  Groups

Click the Within-group correlations & covariances button or the Save stacked matrix button on the Statistics by Groups Results dialog box - Correlations tab to display the Select Groups dialog box. Use the options in this dialog box to select the group(s) for which to display the correlation matrix.

Select the groups for the matrix. To select all groups, select All Groups from the list. To select a list of consecutive groups, drag the mouse over the list while holding down the left mouse button; to select nonconsecutive variables, hold down the Ctrl key while clicking on the groups in the list.