How to refer an item in Master Group (EBS HRMS 12.1)

I am tryin go add a field from a Master group to its detail group in WORD Template Builder (rtf) -

NAME | SALARY | ...| | <= Table Titles

<?for-each:G_DEPT?>

<?for-each:G_EMP?> | | |...... <?end for-each?>

<?CS_EMP_COUNT?>

<?end for-each?>

How could I add an item (field) 'SEGMENT3' from G_DEPT in the for-each of G_EMP? how would it be addressed?

I think it's a basic question, hope someone could help me?

Thank you so much.