To create a single stair (Filter):

1. Follow steps 1 to 5 in Creating a single stair (Target) .

   You are prompted to "Create as Target or Filtering object? [F]/T".

2. Filtering is the default choice, so just press Enter to create the Stair as a filter object.

   The Edit Stair dialog is displayed.

3. Enter a meaningful name for the new stair in the 'Name' box.
4. Select an 'Entity direction on stair':
   • Up only
   • Down only
   • Bidirectional (default option)
5. If you want to change the default 'Distance Factors', enter new values in the boxes labelled:
   • Distance Factor Up
   • Distance Factor Down

   For more information on these factors, see "Distance Factors for Stairs and Escalators" in Linking to Escalators .

6. In the box labelled 'Link Properties', decide what Entities will do when leaving the Stair:
   • Do not change target – Entities keep same target
   • Revert to final destination – Entities proceed to their Final Destination
   • Specify links – add specific links using the available 'Links from Top' and 'Links from Bottom' tabs and by following Linking methods . 
7. If you need to test your model against required regulatory flow rates you may wish to set a maximum value for 'Flow Rate Limiting'. To do so, check the box Maximum and enter a value for people/minute in the adjacent field.
8. Set the Stair's filter settings by clicking on 'Up Filter', 'Down Filter' (or both if it's a bidirectional Stair) and following the steps outlined in Specifying filter settings .
9. To set Availability and possibly Condition parameters, follow the steps in Setting Availability parameters .
10. Click OK to close the ‘Edit Stair’ dialog box.