How to active two-step operation request feature, and assign checker.
To activate the Two-Step Refund & Void Authorization feature, add the Operations Approval Plugin. Navigate to the Ottu Dashboard > Administration Panel > Plugins > Installed Plugins
Add the Operation Approval to the Plugins window.
Only one authorized user can assign a checker user. To assign a checker, navigate to the Operations Approval Plugin > and select Operations Approval Plugin Config.