Under the customers module, you can host multiple profiles of your customers/contacts. To host customer/contact profiles in Zeda.io, you can always upload the users via a CSV file or also set up automation via Zapier (with Hubspot, Salesforce, Gainsight, etc.) so that this information is always updated in Zeda.io for getting a more accurate estimation of the value/reach.
Any customer who shares feedback directly via the customer portal or in-app widget will automatically be tagged to feedback. However, if your customer-facing team members want to tag a customer with existing feedback, the first step is to host these profiles on the customers module in Zeda.io.