If you have asked evaluators to answer your survey via different share links, you can filter answers based on the share link. Different share links can be used, for example, when you want to share evaluators to different groups without asking an evaluator to tell the group they include in. Read here how to create new share links.
When share links are used in a survey, separated cards are created for hashtags and share links in Analyze. Hashtags and share links can be used as filters in the same way as choice questions' different options.