1. Use the Active / Paused / Cancelled tabs to pick the status group (the list defaults to Active).
2. Use the multi-select filters above the table for Group, Subscription (plan name), User and Error (Yes/No). The options are built from the rows currently loaded.
3. Use Filter By Renew to pick a date: it shows subscriptions whose renewal window starts on that date (the buffer date).
4. Type in the Search box: it matches the subscription ID, the customer's first or last name, and the plan name; multiple words are combined.

The filters combine with each other and with the tab. The Show selector changes the page size.