In order to setup the number of ads on a Building Level, you will need to configure each ILS on a building level as well.
GOTO: PROPERTIES --> BUILDINGS --> Select the property in Question --> Click on the MARKETING TAB.
CLICK EDIT and Scroll down to +ILS VENDOR PROFILE
Once you have selected your Vendor, configure the Vendor settings with Maximum Number of Ads, Website and Contact information to be used with this Vendor.
Make sure you have all Marketing information for the Property Setup Properly such as the information on the following tabs:
1) Building--> GENERAL Tab
2) Building --> DETAILS Tab
3) Building --> MARKETING Tab. Here please ensure you have the Marketing Summary, Contacts completed.
4) ILS Summary: Use this Tab to create various different headings to be used and rotated to maintain active, ever-changing ads