Configure users with Office 365 Business and Personal on same system

I have a few cases where a company employee already has their own paid subscription to Office 365 Personal on their laptops but they need to have the copy of Office 365 Small Business Premium that is linked to their company email account in order to have access to all the same features and access to the same Business One drive folders.
I am not sure how to best handle this. In cases where I can, I advise them to uninstall their personal and then install the Business version. In cases where they do not want to do this, I have had a few try loading Business 365 on top of Personal 365 and occasionally run into trouble that way.
Since it is a subscription product, with the costs paid for by the company, I would think uninstalling the personal and cancelling future charges to their credit card would be appropriate but I have not been able to confirm even with MS if there is a "for Sure" best thing to do.
If anyone has any advice for this situation I would love to have it.