Enable the Craft and Auto-loot options respectively if you wish your character to perform such automatic actions at the end of a fight.
For the Craft option to work, you must properly place the crafting skills in Archlord on the 2nd row of your dashboard, slots 9, 0, and "-" respectively, in the following order: Ransacking, Carving, Skining.
For Auto-loot you can specify how many gathering attempts should be performed. Too many attempts will waste precious time, while specifying too few may leave some items on the ground. Adjust this number according to the richness of the loot in your hunting area.