Put one (two*) action cube on a warehouse area on your player mat. Manufacture up to as many products as the number of buildings of this type constructed. Pay the specified cost for each item produced, then place product cubes in the respective warehouse.
Albert chooses production as his main action. He has 2 meaderies, one artisan workshop and three forges constructed. He decides to produce weapons and fabric.
He puts an action cube on the forge area on his player mat, pays 3 
+ 3 
and manufactures 3 
.
Then he puts an action cube on artisan workshop area, pays 1 
+ 1 and manufactures 1 
.
Albert lacks 2 for his army training plans, so during this turn he activates his forges again. So he puts two action cubes on forge area, pays 2 + 2 and manufactures 2 more. Then he passes the move to the next player.
Note that he did not produce in the meaderies, although he could. Perhaps, he is not sure how much of mead he would need yet, or he realizes he lacks food for his army training plans. In any case, Albert can choose production action this round again to produce in his meaderies, forges and artisan workshop.