Laying Mines with the Fa Shih - MegaMek/megamek GitHub Wiki

To Lay mines they are deployed in the Movement phase.

It literally depends on when you click "lay mines" relative to determine if they drop at beginning of movement or end.

• declare jumping mode, click lay mines, click target hex to jump to, done should drop at beginning of movement (edited)
• declare jumping mode, click target hex to jump to, click lay mines, done should drop at end of movement

Using the MORE option until you see Lay Mine

One you hit Lay Mine a dialog will pop up asking which Trooper can lay the mine (you can only choose one)

Once you hit OK, you then need to Jump to get the mines to deploy.