It's easy to change your topics:
First, log into your account on ProfNet.
It will open to My Inbox (with active leads).
Click on "Adjust filters". A new page will open.
You'll see "select categories" at the top.
Click on the + sign next to broad categories like "Living" or "Management/Workplace".
Check the box next to topics you want added and click checked boxes for any topics you want to delete.
Once you're done with all changes in all categories of interest, click on the green SAVE button at the bottom and wait for an onscreen message indicating that your changes were saved.