where do we control VBUK -CMGST

Hi Gurus,

I am presently working on Credit management and work flow.Can anyone help me where can i locate CMGST field in the sales document type.I have checked the table VBUK and was able to find cmgst filed but it is defined as Sales order Administrative data.How to find this field while configuring the sales document type.How do we control it?

Thanks in advance,

Ramesh.