Corresponding conditions for different regions, boundaries and interfaces may be set at the same time. This will be illustrated by setting a Constant, but the principle would hold true for field functions or tables.
First, open the nodes for the corresponding regions, boundaries or interfaces. Then open the Values nodes in each of the corresponding regions, boundaries or interfaces and select the required values using the mouse to do multiple selection. Select the Constant node and enter the appropriate values in the Properties window. This will be applied to all the selected values.