Sub-user: can't see their forms

My colleague whom i've set as a "sub-user" has built a form.  yet I can't see it from my dashboard view in Jot.  He can see the four i've built and that we're using, but I can't see his one. He also says that he doesn't have the feature to "share" his form with me. 

We both need access to the form and submissions. 

suggestions? 

Daniel 

UPDATE: Effective October 2018 the Sub-User feature has been discontinued and is no longer available for creating new sub-users. If you had been using this feature previously, you're grandfathered. 

 If you would like to have additional users added to your account, please check out JotForm Enterprise.

If he wants to move the form to your account, all he needs to do is to drag an drop the form in the folder you shared to him, example: https://www.jotform.com/help/342-How-to-transfer-or-share-forms-and-data-with-another-account