condition supplement

Hai,

1. we are using condition supplement for the condition type PR00. To the condition supplement procedure PR0000 some sondition types are attached?

Here my question is PR00 is a tem condition where as the condition types assigned to PR0000 are header condition types? In which situations we use this type of bussiness process?

2. What is group condition and where u use?

Regards,

Kedar. s