Shared negative keywords lists are not available in Bing Ads Editor for Mac just yet. Don't worry, it's coming soon!
An easy way to filter out unwanted traffic is by using negative keywords—specific words or phrases that help prevent your ad from showing to customers who are unlikely to click your ad. With a shared library, you can apply entire lists of negative keywords to multiple campaigns. The shared library makes negative keyword management easy because, to make a change across campaigns, you only have to edit a single list.
If you already have your list of negative keywords in a spreadsheet, you can add them in bulk by clicking Make multiple changes.
To associate the list with another campaign, click Create negative keyword list association again, or click Make multiple changes to import multiple existing associations via spreadsheet.