Login as a reseller and go to Settings > Policies page:
To customize portal logo click MSPControl Policy:
Select Override Host Settings from dropdown in the top of settings form – the Control Panel Settings will become editable for reseller:
In Logo Image specify absolute or relative URL to portal logo file.
In Default Session Limit (minutes) field you could enter number of allowed minuted for user to stay logged in. User will be logged out when limit is expired.
In Peer Account Password Policy section you could describe password complexity policy for customer account passwords.
Click Save button to save changes.