One Mac, two users and two Time Machine drives / backups

I have a MacBook Pro with two user accounts, home and office.
I want my differnet user accounts to have separate Time Machine backups. The problem is that if I go and make changes in the Time Machine settings, they affect both users. I don´t want to manually tell Time Machine what it should back up at home and what at work. Is somebody following? =)
@ work I want the Mac (logged in as the work user) to backup to my office TM drive
@ home I want the Mac (logged in as the home user) to backup to my home TM drive

I have exactly the same situation - my employer and I have made a deal where I get paid for using my private laptop at work. Both me and my employer want my work to be backed up at all times, but the company does not want to pay for an extremely much larger backup disk than necessary for my work, and I don't want my private data to be on the company backup disk.
Any ideas on how to solve this?
Perhaps there is some third party software with this functionality?

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    rebby575 wrote:
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