The blocks function in the MAtricks creates blocks of fixtures of the specified size.This treats blocks of fixtures as one fixture.It is better explained with examples.Example - Ten Fixtures One AxisIn this example, there are ten fixtures (1 through 10).They are selected from 1 to 10 without any specific grid information. Highlight is activated.Since there is no grid information, then the fixtures are only in one axis - the X axis.Press Next to make the MAtricks X value 0. It looks like this in the Selection Grid and Fixture Sheet (Channel SheetMode) window: