To start production, go to production screen and drag items from item list on the right, to the production queue at the center. The top item in the queue, if any, would be the current production. One workshop can only work on one production at a time. Order of item in queue can be changed by dag and drop.
For each item in the queue, the technicians need some time to setup a production line, before actual production can starts. This applies even for previously produced items or accidentally cancelled items - if an item doesn't already exist in the queue for current workshop, it will need a new production line.
To avoid repeated setup of production line, it is common to queue lots of consumables such as ammo, dynamite, first aid set etc (Right click +/- arrows to adjust in 10 instead of 1). The point is so that they would not finish for at least a few days, and player can then manually control the current production by shuffling the queue.
|Man-days per day||1.33||1.43||1.53||1.64||1.75||1.87||2.00||2.15||2.30||2.46||2.63||2.81||3.01||3.22||3.45||3.68||3.94||4.22||4.51||4.83|
Thus, a level 7 technician takes 2¼ Mars days to setup the rifle production line, and 1½ day to produce a rifle, for a total of around 3¾ Mars days. Four level 6 technicians can produce 7.5 units a day, enough to finish the same job in almost exactly 1 day.
Production gives around 2.5 experience point per hour at Normal difficulty. This experience does not varies; more or less technicians in the workshop and difficulty of the item does not change this experience.
Because production does not consume any resources, it is best to keep all technicians busy when they are in base, to maximise both production and experience.