Changing the number of logos for Responsive Devices in Logo Carousel is pretty easy.
Step 1: Click on the Logo Carousel module to open its settings.
Step 2: Under the General Tab, you will see the number of logos in a row option. It has three fields, Desktop, Tablet, and Mobile.
Step 3: Change the number in front of them to change the number of logos to show at a time to the user. Click save once completed.