Mothering chicken eggs

We have learnt that birds reproduce by eggs and we are going to mother chicken eggs in an incubator. We have 12 eggs and an incubator with two bulbs,  some fans to distribute the heat and a thermostat and 21 days waiting. We need to turn the eggs and we have written on them an 1 and a 2 to simulate what a hen does and control the turn. Now we  have to do it for 18 days because the three last days eggs don´t need to be moved. In the afternoon and in the evening it is Jose Chozas, our concierge who does the turns. Thanks to him, we can do this. 
Thank you very much Jose for your dedication  and interest.