As an Administrator, I cannot add or modify a Workflow in a non-default Virtual Instance

Issue

I go to: Control Panel → Configuration → Virtual Instances
I create a new Virtual Instance
I log in to the new instance
I go to: Control Panel → Workflow
I try to modify the Single Approver workflow or add a new workflow
Result:
In Portal 6.2 and DXP 7.2, you have no option to add a new workflow or modify the existing one (the buttons don't appear)
In DXP 7.0 and 7.1, when you try to click 'Publish', an error message is displayed at the top of the screen ‘Error: An error occurred in the workflow engine.’

Users who publish (or edit) workflow definitions containing scripts can get access to any data within the reach of the JVM, such as data contained in a separate Virtual Instance of Liferay DXP itself.
Because of this far-reaching access, permission to create or edit workflow definitions is limited to Regular Administrators of the Default Virtual Instance.
For Liferay DXP 7.0+: We have added a System Setting with which you can provide this access to Administrators:
1. Make sure you understand the access you’re granting these admins.
2. Navigate to Control Panel → System Settings → Workflow → Workflow Definition.
3. Check the box for the setting Allow Administrators to Publish and Edit Workflows.

For Liferay Portal 6.2: Add the following property to portal-ext.properties file:
```
workflow.company.administrator.can.publish=true
```

Kindly refer to the official documentation: Workflow Definition Publication Permissions