Changing data advertisement frequency on BlueNRG DK example

Hello, I am using the example code BLE_Throughput from the BlueNRG-2 DK to program a PCB. The example is working fine but the frequency of advertisements is too high for what I need and I could not find in the code where can I change it. Could someone plese indicate me the file that needs to be changed so I can slow down the advertisement speed? Thank you!