Double click to select a loop of edges to project through a volume block. You
may have to double-click a second or third time to let the software cycle
through all loops connected to the selected edge.
(Optional) Select Convert swept/mappable regions
to convert the split regions into mapped or swept blocks wherever
possible.
Click the Complete tool to create the split. In this
example, Faces connectivity is enabled to see the new, shared face created
across the middle of the block.