Setting Up Terrain - Method 2

Source: 3rd-A-Palooza (3.5) Rulebook v1.4, p. 54

The players choose, or roll for, a half of the table each. They then place all the terrain in that half of the table. this is done purely by choice. Once both players are happy with the position of the terrain they roll a dice - the player with the highest score chooses their deployment zone as indicated in the mission.