Adding and removing function inputs and outputs
You can configure functions such as Substring and Concatenate to have additional input parameters.
To add or remove parameters:
- Click the + icon or right-click the function widget.
 - Select to add an additional input parameter to the function.
 -  
		  To remove an input parameter that is no longer required in the function: 
		  
- Right-click the function parameter.
 - Click .