There are occasions when you click on a new task link on the 'Communications' template that you may see this message.

To overcome this the practice needs to have a user group named exactly the same. 

To create a new group 

• Go to 'Workflow > Task List > click on settings > User Groups  
• Click on 'New Group' and call it 'Administration'
• Click on the new group title and select from the staff list on the right who you want to be in that group 

Please note: 

You cannot amend the name of an existing group so if you already have a group with a similar name, to avoid any duplication, you should consider deleting any redundant groups.