I'd like to recreate a folder hierarchy like in this example (from TFS Branching Guide Main 2010 v1):
The problem is I cannot understand how to create additional root-level folders, like those Development and Release in the picture above, to put new child branches into.
The New Folder
command option becomes available only at levels beneath root-level branches.
How to create new root folders in a Team Project source control at the Main branch level?
You cannot add a folder to root in TFS to an unmapped as mentioned. However one good way to do this is with the following example.
Scenario:
For me this works fine, although I too would prefer the freedom to setup a folder structure ahead of time for myself and other developers without having to commit /checkin code etc...
Here is what I did.
And now you have a new "Directory" under the collection root.
Make sure that your workspace maps at the Team Project level ("StandardBranchPlan" in the picture). I just tried this, and found that "New Folder" does not appear if I have the wrong workspace selected, but once I select a workspace that maps the folder under which I want to create a new folder, "New Folder" became enabled.