As of January 2016: Process customization is supported in VSTS, details can be found in this post.
Until January 2016:
This is not possible at the moment, however, internal Microsoft commands using custom process templates in Visual Studio Online.
Expect this to change later this year (2015) - check out the Brian Harry blog .
The best you can get at the moment is to use tags and configure Kanban boards .
If you really want this feature, vote for it . Visual Studio User Voice User Request . Strike>
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