With some “recent” slicers …
Example with “Ultimaker Cura” if you have multiple objects (possibly separated with the “Mesh Tools” plugin if only one file) there is an option to specify whether to print everything at the same time or one object at a time. But this requires properly configuring the printer profile to avoid authorizing placements which could create collisions of the head with objects already printed during printing.
(this is becoming more and more common with the appearance of infinite 3D printers (the plate being a conveyor belt…))
