Hi,
If you define a query that is used as a list to pick one or more from and it is set to display unlimited items and those items are grouped it is not possible to pick any item apart from the one that is at the top of the list.
Follow these steps to reproduce using V6 config tool and the CRM sample app:
1) Find the 'Users online' query and click on 'Display Results'. Change the number of items displayed to unlimited. Under item grouping select 'Access Level' or some other attribute to group by.
2) Find the 'Instant Message' BO. Edit the 'recipient' attribute so that it displays as 'Table of Items'. Click on 'Settings' for the generate add button. Enable 'filter selection list' and ensure the 'existing query' is set to 'Users online'
3) Publish the app and log in to the operation mode.
4) From the menu click 'Instant Messaging' and then 'New message'
5) In the instant message form click on 'Add' under recipients
6) You will not be able to select any recipient other than the first in the list
Thanks