How do you play a Mexican scramble in golf?

Answer 1

Team event - usually 4 person.

All tee off, pick best drive. The next shot is played by all except the person whose drive was picked. And so on for each subsequent shot. (So 4 shots to choose from from tee but then only 3 for subsequent shots.)

Usually min number of drives per team member eg. 3, also some fraction of combined handicaps eg. 1/10th.

Answer 2

If your playing in a foursome, for example, each player hits their own ball off the tee. The foursome (or team) chooses the best shot. The shot is then marked and all players shoot from there. Repeat until ball is made into the hole