Purge Bin functionality allows you to easily process tickets and users that have been soft deleted in Zendesk. This is a much needed feature if there are a lot of soft deleted users (or tickets). And allows for the app to run in the background, while you continue your actual work :)
Once the one-time Purge has been selected, the task will show up in Current Queue.

When the task finishes, you'll find the result in History.
Be advised: User Deletion (also known as Hard User Deletion) is limited by Zendesk to a maximum of 700 users per 10 minutes. GDPR: Search & Destroy speed is determined by that limit.