How to customize data sources in the dropdown box of TFS work item templates

Question

How to customize data sources in the dropdown box of TFS work item templates? The current situation is as follows：

The options in this dropdown box are fixed. How can I customize this data source, such as the value of the option coming from the interface query.

I thought about implementing it through plugin extensions, but I couldn't find any reference examples.

Answer 1

That is not supported. However, you may add a global list (Define global lists), and add it to your work item type Define pick lists:

<ALLOWEDVALUES for="userGroupName" not="userGroupName" expanditems="true | false" filteritems="excludegroups">  
      <GLOBALLIST name="globalListName" />  

. . .   
</ALLOWEDVALUES> 

Then you may use witadmin to export, modify, and import global lists: Manage global lists for work item types