There’s no direct way to do that. Multiple check-out is a property of a team project, it’s not namespace specific.

Original post: 
How to: Disable multiple check-out on a folder?

Filed under: 2008, 2009, 3.0, ads, anonymous, app, application, archive, art, atom, att, Blog, blogging, book, case, cd, cli, cloud, code, community, Cookie, css, data, development, display, email, event, events, files, flash, fun, graphics, history, im, ion, legal, mail, march, media, Meta, microsoft, Microsoft Rules, mmo, mms, mouse, new, news, note, opinion, OS, personal, play, press, pro, rip, screen, script, search, security, server, service, social, source, tags, tasks, theme, themes, tip, tor, trends, ui, uk, unity, value, website, widgets, windows


Hurricane Sandy and My Windows Phone