If the platform uses ServiceNow, you can use GlideSysAttachment and ZipOutputStream to bundle attachments into a single ZIP file for the user.
Depending on your tech stack, here are the most likely ways to implement this feature: 1. Web-Based Zip Generation (Server-Side) Download CWsof zip
If the goal is simply to provide a link to an existing ZIP file hosted on the CWsof server: If the platform uses ServiceNow, you can use