With Scheduler Cloud v3.9.0 we added new permission that allows users if permission given to create SI with security level.
Where is it located and what is it called
This permission is called The Scheduler: Set issue security level and can be found in company-managed projects in Project Settings → Permissions right above The Scheduler: Use permission.
What is it for?
It was added to allow users to create SIs with security level without the need to grant the standard Jira permission Set Issue Security permission. With only The Scheduler: Set issue security level users can work with Scheduler and create SIs with security level.
Before using Scheduler
You have to grant a permission so Security Level field will be visible in SI Wizard. Go to Project Settings → Permissions and scroll down to Set Issue Security. The you have to have at least one of the following:
atlassian-addons-project-access project role
The Scheduler user
When one of those permissions is set Security level field will be visible in SI Wizard.
Now you can use The Scheduler: Set issue security level and create SIs without the need to use Set Issue Security permission.