The software provides two ways of creating multiple volumes at once. With Create Multiple Volumes Command , you specify a volume in the model, and then you split the volume by inner structure. The existing, parent volume is not deleted, but the volume is changed to a void space if the parent is the same type as the children volumes.
You can also create many volumes at once using Tools > Create Compartments Automatically Command. This command creates all the compartments in a ship by using all existing faces. You only define a filter for the faces.
When you are creating multiple volumes, it is often helpful to select a specific coordinate system. The Plate Filter box on the ribbon allows you to select a grid system for this purpose. See Create a filter for a grid system.
What do you want to do?