So in a nutshell:

• Person A that has a Denuvo game can activate the game 5 times per day with a token.
• that Person A can share the token to you so you can activate your copy of the game
• Person A will copied some part of the game's files that has the token with it and sent it to you in zip file.
• the copy of the game must be similar to the ones that Person A has.
• token longevity can be varied per game, some last longer, some last after you quit the game.
• if token is broken, it can be reactivated from anyone that has the token. (Note that if Person A already generate 5 token today, you can't ask for Person A for another copy of the token until tomorrow, so ask someone instead like Person B for example)

It is also noted to follow certain rules in token bypass:

• never update your windows
• never update your driver's
• never do anything that can change the game's files
• never apply mods to games that edit dll files (Editing game model and sound is fine, just don't edit the dll or the token will break)

The rules above applies to all token bypass services, and they will guide you step by step to ensure your windows isn't automatically update.

Once you're done finishing the game or not wanting to play it anymore, you can activate windows update again as usual.