Editing Records: Required fields are marked by which color?

Using the following hierarchy, if a sharing rule exists granting Operations Person Read/Write access to Sales Management on the Account Object, what access does Operations Management have to Sales Management's accounts?
Default access for the
Account object is Public Read Only.
Executive Management
Sales Management
Sales Person
Operations Management
Operations Person

Can the User Records be permanently deleted from the Salesforce.com?

What is a Running User?

All personalization made to the Reports tab (expanding and collapsing of folders) is saved automatically. When a user returns to the Reports Tab in future sessions, the settings will remain intact until they are changed: