Question about 'Set Sponsor' in Groups

[xxxtreme]

In the section Groups > Tube Import > Set Sponsor, I am forced to select only one sponsor from the ones in the dropdown list.
Does this mean that I can only import tubes from the selected sponsor for that group/category?
If so, how could I import tubes from all sponsor for that category?

[admin]

Set sponsor is located under "TubeImport " section which was used to automatically add galleries from tubes.
If you import galleries use regular Import or Import Set that option doesnt matter.