Can't add widgets to lock screen. PIN problem?

Your IT department likely has a policy set in ActiceSync to require use of a passcode for accessing your mailbox. Android respects this and forces the passcode requirement as soon as you add the account. You can't turn it off if you still want to read your work email. Companies have to protect their data - requiring a passcode is one layer of many.
 
You have to have another widget to replace the clock.. You cant just have a lockscreen with nothing on there
 
I have the same problem!
Could you please elaborate more on how to *enable* the lockscreen widgets in Google Apps for Domains administrator mobile options.
I cannot not find in my Nexus 4 setting. Very appreciated.