[xwiki-users] Modify recently changed documents panel

Hi all, I use the recently changed documents panel on our wiki, and it works perfectly. However, the panel shows me all the changes in all the documents in all the spaces. But I want that it shows only the changes in certain spaces, in the current space where the user is in, and in a global space that all users can see. I know I have to add something to the header code of the panel, but I cannot find what I need to add there. I hope someone out there can give me a hint, or better, a solution, to my issue. Thanks in advance for your help, Wouter