There is no way to add multiple featured listings to the homepage of your directory otherwise it will not look good. But there is a way you can handle that if you have multiple businesses who wanted their business to be listed as featured.
Here's what you can do, since businesses pay you each month for having their business get featured in your directory, you can assign different listings to get featured each month.
For example 3 businesses got in touch with you and wanted to have their business to be featured into your hotsite, you can arrange with them as to when they wanted to have their site be on that spot. Let's say you already have listings scheduled for November and December, then January would be the next spot available. Make sure you don't overlap the schedules with other listings so take note of schedules so you will have somewhere to verify if it's good to go.