Final answer:
To restrict the Assignment group field in the incident table, you should modify the Reference Qual attribute to a custom JavaScript function that filters the groups. Options A and C from the choices provided are suitable for defining a filter based on specific criteria like 'incident' or 'itil'.
Step-by-step explanation:
To configure the Assignment group field in the incident table to allow selection from a certain set of groups, you need to modify the Reference Qual attribute of the field. This is commonly done by adding a JavaScript filter to restrict the groups that can be selected. Consider the following steps:
- Modify the Reference Qual attribute of the Assignment group field to "javascript:GetGroupFilter('incident')". This means you are creating a function called GetGroupFilter that will apply specifically to incidents.
- Modify the Reference Qual attribute of the Assignment group field to "javascript:GetGroupFilter('itil')" if you are trying to filter for ITIL groups specifically in relation to the incident.
Option B is incorrect because 'GetGroupTypes' is not a standard function for filtering groups in the context provided. Option D is not directly related to the Reference Qual attribute but rather to the attributes of the groups themselves. Option E, adding new records to the Group Type table, could potentially be part of a solution, but simply adding records without the proper filter in Reference Qual will not restrict the Assignment group field to a specific subset of groups.