Maintain Field status grups for vendors

In IMG - Vendor master - define account groups with screen layout -,

I'm trying to change one of the fields in General data - control tab. there are two pages for this to viewl all fields associated with the control. I could only view the first page, if I clikc the yellow arrow on left menu, it's taking to the next group. How can go to the second page (which is within the same control group). I could view all fields in table view, however, I can not change the status in the table view. The field (ext.manufacturer) I wanted change is in the second page. Please advise.