This is unlocked by winning the Formula 1 Constructors' Championship in Career.*
The Achievement is a mainstay of Codemasters F1 titles, and has featured in multiple games in the past.
For those not familiar with Formula 1, there are 2 Championships to compete for in each Season:
> Drivers' Championship
This compares the point totals of all drivers, most points wins.
> Constructors' Championship
This combines the points of both drivers in a team, and compared those point totals with those of the other 9 teams in competition. Again, most points wins.
The easiest solution would be to choose a top level team (either Ferrari or Mercedes), set the AI Difficulty to its lowest number and win every race in a season. Your teammate will amass enough points to help guarantee you the Constructors' Championship.
If you are currently in a Career with a different team, things get a little trickier.
The maximum number of points a team can earn during a race weekend is 43 (25 + 18).
If you win the race the maximum another team can earn is 33 (18 + 15), which means your teammate will need to earn 8 or more (finish 6th or higher) to ensure that your team takes the most points from a race.
Keep an eye on the totals as the season progresses and continue to win races.
One final note: The Championship may be "won early" if you have a large enough points lead. Even so, you must complete the season to be awarded the trophy at the end, and to unlock the Achievement.
*It may also be possible to unlock this in Championship Season mode, but I haven't tested it in F1 2017 or F1 2018. Comment below if it also works there.