... that makes sure that you can print sequentially OR NOT!
Creating processes allows to mix the systems, e.g. 16 objects, 4 processes and 4 objects on each; or e.g. 3 processes with only 1 object and the 4th with 13.
The feature of processes is one of the best idea S3D ever had!!! It is the most flexible solution I know, and not only for sequential printing, this is the exeption and it is only consequent to use it also therefor.
The hunters luck is the kismet of the rabbit!
Please dont compare options of other slicers with th options of this one. Different programs - different solutions. May be, this solution is not optimal for you, others wont spare it.