Navigational Attribute and search help

Dear all,

i have couple of questions about manual planning layout.

i have year material and quantity in my manual layout, when i enter material with 0material, i want to change that search help.

1) Where do i set the search help of 0material? any way to do that?

2) I have nav. attribute of material, i want to enter that nav. attribute insted of 0material, (thats material number in other coding system) and try to fill 0material in background.

How come?

Thanks

jmq