After all node tags for all Remote Areas have been automatically placed, turn OFF the Settings > Hydraulic Calculations >Node Tags option to “Dynamically Renumber Node Tags”
Select all nodes in the drawing and use Hydraulics > Node Tags > Renumber.
The sprinkler nodes need to be at a high enough number so as not to interfere with the new/desired numbering scheme (example: 2101). The system tags usually start with a low number (example: 1).
Once the nodes are renumbered, select Area 1, go back to Renumber Node Tags:
Select Area 2 and change the sprinkler tag starting number:
And so on for the remaining Areas.