| Step 1 |
Add a compartment to the model diagram.
- Click on the
 compartment symbol in the toolbar
- Move the mouse to the middle of the desktop window, and click again
|
| Step 2 |
Rename the compartment account.
- Click on the
 select tool in the toolbar
- Move to the compartment labelled comp1, and click on the compartment symbol
- Delete the label comp1, and type in the label account
|
| Step 3 |
Add an interest flow and a withdrawal flow.
- Click on the
 flow symbol in the toolbar
- Move the mouse to the left of the compartment labelled account, hold the mouse button down, and drag the mouse into the centre of the compartment. Release the mouse button.
- Move the mouse into the centre of the compartment, and drag to the blank area to its right. Release the mouse button.
|
| Step 4 |
Rename the two flows.
- Click on the select tool
- Click on the valve (bowtie) symbol on the first flow. Delete the label flow1, and type in interest.
- Click on the second flow, and re-label it withdrawal
|
| Step 5 |
Add a variable for the interest rate.
- Click on the
 variable symbol in the toolbar
- Move the mouse to the blank area above the interest flow, and click once
|
| Step 6 |
Rename the variable interest rate.
- Click on the select tool
- Click on the variable labelled var1
- Delete its label, and type in interest rate
|
| Step 7 |
Draw the influences.
- Click on the
 influence arrow button in the toolbar
- Move the mouse to the middle of the compartment labelled account, and drag an influence arrow to the flow labelled interest
- Release the mouse button when the flow has turned green
- Move the mouse to the middle of the variable labelled interest rate, and again drag an influence arrow to the flow labelled interest
|
| Step 8 |
Re-arrange the model diagram.
- Click on the
 move button in the toolbar.
- Move the mouse to the middle of the compartment labelled account
- Drag the mouse, and watch the compartment and its associated arrows re-arrange themselves
- Repeat for the cloud symbol at the end of each flow arrow, the variable, the valve symbols on the flows, the middle of an influence arrow, and the labels.
|
You should see a box labelled comp1.