Before each night, a queue schedule will be made. OBs will be selected basing on the visibility of targets, currently installed filter, time constrains, and priority of programs (based on their GRADE) and particular OBS of the same program (prioritized by the user). In principle, a GRADE A target will be observed if possible. Before starting an OB, current weather conditions will be checked, and the night schedule can be instantly updated if these suddenly change. The scheduler will also take into account the position of targets on the sky, in order to minimize the telescope slewing time. The number of filter changes during the night will be minimized. In case of proposals using both broad-band and narrow-band filters, once it becomes impossible to execute a narrow-band OB due to filter scheduling, the priority of the corresponding broad-band OBs will be lowered.

The schedule for the incoming night will also depend on the FQA of the previous night's data, and will be adjusted on the basis of completeness of programs (especially GRADE A). If a program's completeness is very low, the SAs or SOD may contact the PI and ask to relax the constraints.