Requirements for using the Mythic+10 service
When it comes to the requirements for participating in Mythic+10 passes through the mythic +10 boost service, they can vary from service to service. However, there are a few common points. First, the character must have access to mythic keys, that is, all normal dungeons are closed. Secondly, the level of equipment should usually be at least 415-420, but many boost services are ready to take a player even with a weaker gyre, as all the work falls on the professional team. An important point - some services offer two options of boosting: with the player's participation (self-play) and without it (pilot). In the first case you just need to be present in the game, follow the instructions of the team and perform minimal actions. In the second case, your character is temporarily transferred to an experienced player who performs the whole process himself. It is also worth considering that some boosters provide a guarantee of passing the timer or offer additional bonuses for super-fast closing.
I think the requirements aren't as strict if you're playing with a strong group. Of course, a certain level of equipment and basic knowledge of dungeon mechanics will help, but it all depends on the team's specific approach. I've never used boost services myself, but I've met people who order them, and judging by their stories, it's a really convenient way to save time.