Editing Automation (section)

=== A contact can enter this automation (concurrency) ===
This is how many times a contact can enter an automation. You can choose from:
* '''Any number of times''' (default) - The contact can enter through any trigger any number of times if they meet the conditions.
* '''Only once''' - The contact can enter the automation once across any number of triggers. If you select this option and have a trigger set to run multiple times, the contact can enter the automation only once.
* '''Only after they have exited''' - The contact can re-enter the automation as often as they meet the trigger conditions, but not simultaneously. They can re-enter after they complete your workflow.

This gives you greater control around contacts entering automations who might match multiple triggers and if you want to restrict their entry or allow them to enter after completing the automation.