Difference between Item editability and Workflow permission

HI,

I am using Integrity 10.3 We are planned to provide edit access to group for editing an item (type CR) at particular state (say Assigned). So I have provided access by clicking arrow that leads to assigned state which enable group to change.

What is difference between Item ediability and permission in workflow state change option of TYPE in Integrity Admin client.

Regards

Sarath