> For the complete documentation index, see [llms.txt](https://water-strategy.gitbook.io/waterstrategy/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://water-strategy.gitbook.io/waterstrategy/tutorials/using-allocation-penalties/exercise-1b-two-demands.md).
# Exercise 1b Two demands
Note: Create a new network called Exercise 1b and setup the timestep before running the network as described in Exercise 1a.
### **Creating topology**
Navigate to the left panel and click on **Build** to open the Nodes list.
Drag and drop to the workspace Map:
· 1 input node 
· 2 output nodes 
Click on **edge**  to activate “link mode”. And connect the nodes as shown in the picture below:
Click again on **edge**  to deactivate “link mode”.
Note: To learn more about different node types, refer to the documentation here.
### **Configure node’s attributes**
Double-click on each node to open the node panel on the right side of the screen and setup the nodes as in the following image
On the left panel Click on **Run a Model** .
A new window will pop-up, click on **Submit**
Water Strategy allows you to visualize different results on the same graph. To do, click on any node and then **click on the icon**  for the attribute **simulated\_flow.**
Select the desired attributes from the drop-down list and click on the icon 
### **Explanation**
The input node can supply a maximum of 10 Mm³/day, but both output nodes have demands that total 16 Mm³/day. Since both demands have negative allocation penalties, the network prioritizes based on the magnitude of these penalties. The output node with the more negative allocation penalty receives higher priority.
In this case, the left output node has an allocation penalty of -10, which is a higher priority compared to the right output node’s allocation penalty of -5. Consequently, water will be allocated to the left output node first, and any remaining water will be allocated to the right output node.
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