Hello

I have question about customization to columns of the Requirement Structure Editor. 

I want to add requirement attribute which I already created from me as a column. But I only see the default system's attributes when I look the on the "Tree List View". Is there any configure panel or settings for adding on the table on the left panel to Requirement Structure Editor , or I can see the only  predefined system's attributes on the Requirement Structure Editor panel.

Thanks in advance.

Zahid