At the top of both queue sets in ConfigureMatchmaker(). Training runs practice mode (gameMode 5) with zero bots on three fixed maps; the PvE queue is a 1-player queue with an empty levelsDesc because missions come from the PvE schedule instead. 

-- TRAINING QUEUES
{
  maxPlayers = 10,
  minPlayers = 1,
  regionLocalizedTimeInQueue = 30,
  maxTimeInQueue = 1,   -- 45 in the high-online set
  levelsDesc = {
    s1338_pandora_dreadnwreck = {},
    s1338_pandora_anomaly = {},
    s1420_ceres3_northmsite = {},
  },
  query = { ["mmParams.practice"] = 1 },
  special = { gameMode = 5, botsCount = 0 },
},
-- PVE QUEUE
{
  maxPlayers = 1,
  minPlayers = 1,
  regionLocalizedTimeInQueue = 1,
  maxTimeInQueue = 1,
  levelsDesc = {},
  query = { ["mmParams.pve"] = 1 },
  special = { pve = 1, gameMode = 7 },
}
Change training maps by editing its levelsDesc; change which PvE missions are offered via pveSchedule, not here.

Comments

1 + 15 =
Solve this simple math problem and enter the result. E.g. for 1+3, enter 4.