1. In the Mark Index Entry dialog box (Alt+Shift+X), use the "Cross-reference" field. If you are editing an existing XE (index entry) field, add a \t switch.
To see XE fields, display hidden text in Word. You can use the ¶ button on the Home tab (to display all nonprinting characters).
2. The same principle applies here, that is, you will have to add the cross-reference manually (assuming that I have correctly understood what you are trying to do).
Stefan Blom, Microsoft Word MVP