The objective of the precedence diagram is that elements within a column can be assigned to work stations in any order, but cannot be assigned until the relevant elements in the preceding columns have been assigned.
Lengo la mchoro precedence ni kwamba mambo ya ndani safu inaweza kupewa kwa kazi vituo ili yeyote, lakini haiwezi kupewa mpaka mambo muhimu katika nguzo zilizotangulia kuwa alipewa.