Exclude labels from Attachment macro filter

[Marijn Plat]

looking at the documentation on https://confluence.atlassian.com/doc/attachments-macro-97911315.html 

I cannot seem to find the command for excluding certain labels from an attachment filter. 

For example, I have 10 attachments on a page. 2 of those attachments have a label, the other 8 don't have a label. 

I wish to place two attachment macros with differing filters so that one macro displays 8 attachments and the other macro the other 2.

I could label the 8 other attachments (with a different label ofcourse) but that seems too much work especially since I expect to add more attachments that I don't plan on labeling.