Adding Users to Groups

Adding Users to Groups

I am having trouble adding users to my Organizations group.  I have added contacts to my contacts page and successfully invited a test user (with my other email) to Zoho.  After confirming and setting up my zoho account with my test account I have added this same 'test user' to my users in my control panel of my organization.  Then I am attempting to add my test user to my Organizations Group but am unable to complete the process. I am attempting this from my  Groups Home/Contacts page. I then attempt to add these contacts to my groups but without any success.  Thanks for your help!