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Latest Blog: How to Set Up Multiple Log-Ins for Your Account Want to set up multiple sets of credentials so different people in your office/home can log in to your account? Check out today's blog for more information on what you need and how to do it...
Thank you for reaching out. I see that you indeed can have up to 4 machines on the account. I see 3 slots accounted for.
If you install Mozy you can occupy that 4th slot without having to choose Replace. That being said, you can still restore files from the main PC you mentioned as well. I have included some documentation below to help you do this: