Licencing and activation of Trados and Multiterm on a dual-boot system

I am writing this on behalf of my client who has been a licenced user of TradosStudio and Multiterm for many years. Currently she uses the 2017 releases of both program-packages with Office 2010 under W7-64. However after 4 years of daily use, the operating system started behaving weird recently. We decided not to freshly install W7-64 and instead install W10-64 plus Office 2016 as a part of a dual-boot-setup. To facilitate a smooth transition she would highly appreciate to be able to alternatively use both OS-environments.
So my question is: Is there some legal and SDL-approved way to additionally activate TradosStudio and Multiterm under the newly installed W10-64. This should be no licence infringement since both packages are installed on one and the same computer and cannot possibly ever be used simultaneously. How do we solve this? Thanks