Multiple checkout in TFS can only be enabled or disabled at the project level. To enable or disable it, someone with Team Project Administrator access needs to use Team Explorer to navigate to:
(project) -> Team Project Settings -> Source Control -> Checkout Settings and toggle on the "Allow Multiple Check-Outs" box.
If multiple checkouts are enabled for a project, and you right-click on a specific item in Source Control explorer and "Check Out For Edit", you should now get the prompt asking what kind of lock type to apply. This allows you to specifically do exclusive checkouts on a per-item basis.
However, AFAIK, you cannot limit multiple checkouts to a subset of items, unless you force your users to manually do exclusive check-outs of everything else.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…