When you turn on impersonation in DT, entities created by DT are done so on behalf of the current user instead of the DT User.
To turn it on you need to
1. Enter the Organization URI
You get this in CRM > Settings > Customizations > Developer Resources > Organization Service
2. Check the “Impersonate User” checkbox
3. Restart your DT Client
Only one DT Client should be running during this configuration