The illuminated manuscript took anything from months to years to complete. The illuminator was in charge of the elaborate illustrations in the manuscript. The copisti was in charge of writing down every word of the manuscript.
This was the most tiring of jobs. The scrittori was in charge of making sure that the copisti and illuminator were doing their jobs correctly. "A number of illuminators at this date will have been secular clergy like Liuthardus, or even laymen, and it impossible to quantify what proportion of the total they formed (Alexander 10)." "However, in the eleventh century and increasingly in the twelfth century, we begin to hear of lay illuminators who are professionals working directly for a stipend on cash or kind. (Alexander, 12)."