You will have to upload sponsor images into the TeamRaiser event Image Library.
  1. Navigate to Fundraising > select TeamRaiser
  2. Click Manage next to the TeamRaiser event you would like to modify
  3. Select the Library tab
  4. Select the Image List tab
  5. Click Upload New Image
  6. Populate the Image Title
  7. Under option 4, mark the checkbox for "Yes, this image is a sponsorship logo"
  8. Click Browse and select the image
  9. Click Upload
  10. Click Finish
Once uploaded, you can embed the TeamRaiser Sponsor Logo Component within the HTML Area of your TeamRaiser greeting page.