In WordPress, go to Appearance > Widgets > Footer Bottom.
Add Broker, Equal Housing, and Realtor Logos
1. (Preferred) You can use an Image widget for each logo. This allows you to adjust the size of each logo and to add a link to each image.
2. Use a graphics design app and make all the logos into one image.
Then use the Image widget to add the combined image. This works if you don't require links to each logo.