It is possible.
Just click the [...] button under Speed Limit and define a new rate, putting a colon between two values, e.g. 100000:50000, with "Traffic Direction" set to "Both"
Sorry I wasn't clear my original post. I require a different upload speed AND a different download speed. I require them to be unique. Is this possible?
I did some testing, and it seems my request is impossible with your software.
I understood you This is exactly what you are asking about. Please set Traffic Direction to Both and add a rate as shown above. The first number (before colon) is the max incoming rate, the second number (after colon) is the max outgoing rate.
For example, if you want a 100 Kbps limit on downloads and 50 Kbps limit on uploads, you'd enter 100000:50000.