Not much help above, except from 'Trouble', so let me at least try by sharing my experiences.
I upgraded from Win 7 to win 10 and got fed up fixing issues in conjunction with Microsoft Tech Support, so I elected to go back to Win 7.
You should find under All Settings, Updates & Security a new feature called something like "Go back to Win 7". I cannot remember the exact label because I have gone back to Win 7 - successfully - using this feature.
BUT, please note the caution that 'this feature will only be available for about one month from the date of upgrade to Win 10'. I don't know how hard this suggested cut-off is in reality.
I said I have done this successfully but there is an exception.
This experience was all on a Samsung laptop which had a few special convenience features using Function keys, and at the point of upgrade there was a message that some of these were incompatible and would have to be uninstalled.
On going back to Win 7 these did not re-appear. I was able to download software from Samsung to fix some but the Bluetooth function has evaded me, Microsoft and Samsung on-line support.
This was just a convenience for me and not a calamity to have lost it. But otherwise Win 7 works as it did before and I am pleased to be rid of Win 10.
It might be worth noting that Samsung did advise against the upgrade to Win 10 before I tried it. And since my turning to them for help after going back to Win 7, they still commented that do not have drivers developed for all Win 10 features - so there is a telling caution, and probably behind the stance of your business chiefs, not intending to support Win 10. I suspect they want it to mature first.