Hi and welcome! In today's video, we will cover how to block spam callers in OSS. First, navigate to the left bar and click on "Client," followed by "Business Site." Type the name of the site in the search bar and select the appropriate business site from the results. Next, on the top blue bar, click on "Settings" and then "Block Callers." Click the "Add" button to enter the numbers you wish to block, and remember to save your changes before you exit. Thank you for watching!