Set Volume Conditions opens the Set VC panel where you can set volume conditions for each block (3D) or domain (2D) in the grid (shown below).

CAE, Set Volume Conditions
The Set Volume Conditions panel looks and operates very similarly to the Set Boundary Conditions panel.

Operation and appearance of the Set VC panel is nearly identical to the Set BC panel except that it operates on blocks or domains instead of domains or connectors. Refer to CAE, Set Boundary Conditions for operating details of this panel.