Changes in step 6. – Replenish the display: Before you replenish the display with new tiles, flip 1 Solo marker face up. If there is a tile in the display in the position with the revealed number, discard it. If there is no tile there, discard the tile in the lowest filled position. Then replenish the display as usual.

If this is the state of the display in step 6. and you reveal a Solo marker with the number 4, you remove the Alpaca in position 4 from the display.

If you reveal a 5 instead, you remove the Lion in position 2 from the display (because there is no tile in position 5, so you discard the lowest).