Step-by-step:

Pressure zone information is useful for viewing output data by zone. Assign zone attributes to all features in the model from a GIS dataset.

On the ArcGIS Pro ribbon, Map tab, Layer panel, click Add Data.

The ArcGIS Pro ribbon, Map tab, Layer panel, with Add Data selected

From the Add Data dialog box, locate and select the file PressureZones.gbd.
Click OK to open it.
In the ArcGIS Pro ribbon, Map tab, Selection panel, click Select By Attributes.
In the Select By Attributes dialog box, set Input Rows to PressureZones.
Set Selection type to New selection.
Click +New expression.
In the Expression Builder that appears, set the fields for Where to ZONE, is equal, 1.
Click Apply.
In the ArcGIS Pro ribbon, Selection panel, click Select By Location.
In the Selection By Location dialog box, set Input Features to Valve.
Set Relationship to Completely within.
Set Selecting Features to PressureZones.
Set Selection type to Add to the current selection.
Click Apply.
Close the error message.
In the Select By Location dialog box, set Input Features to Junction.
Click Apply.
Close the error message.
In the Select By Location dialog box, set the Input Features to Tank.
Click Apply.
Close the error message.
In the Select By Location dialog box, set the Input Features to Reservoir.
Click Apply.
Close the error message.
In the Select By Location dialog box, set the Input Features to Pump.
Click Apply.
Close the error message.
In the Select By Location dialog box, set the Input Features to Pipe.
Click Apply.
Close the error message.

Each attribute that you add becomes highlighted in Pressure Zone 1 until all features that are completely within the zone are highlighted.

Close the Select By Location dialog box.
From the InfoWater Pro ribbon, Domain panel, click Selection to Domain.
In the Edit panel, click Edit Domain.
In the Edit Attribute dialog box, Junction table, select the Zone column header to select the entire column.
In the toolbar, click Block Editing.
In the Group Editing dialog box, set Operation to Set Equal.
Set Value to 1.
Click OK.
In the Edit Attribute dialog box, repeat steps 37 - 41 for the Tank tab, Zone column.
Repeat steps 37 – 41 for the Reservoir tab.
Repeat steps 37 – 41 for the Pump tab.
Repeat steps 37 – 41 for the Pipe tab.
Click Save All Tabs.
Exit the Domain Editor.

The map now shows all the model objects in Zone 1 highlighted in red, including the junctions, tanks, reservoir, pumps and pipe.

Digitizing and configuring model features