Which profile type will save changes made by users to their Microsoft Office applications in a pooled random virtualized environment?

Scenario: A Citrix Administrator has a current StoreFront store that supports 150 users who have full access to all enterprise resources. The administrator needs to create a new StoreFront store for contractors who will work onsite for two months. The contractors need access to specific resources but will NOT be Active Directory users.

Which option should the administrator select while creating the Store for contractors?

Which Layer contains the Citrix Director in a XenApp and XenDesktop Architecture model?