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Before configuring an Irrigator Demand Model on a Water User node, you must specify crop factors for the entire scenario using Crop factors defined in this way are accessible for each water user node. More details regarding this can be found under IQQM CropMod2 Demand Model (insert link herecheck/change link when migrated to permanent site)
District Configuration
This describes a number of parameters that can be set at an irrigation district level. The maximum irrigated area is a nominal area that can be set because the total area planted within a water year is not limited other than through the planted area. A warning is then recorded runtime if the planted area exceeds the maximum irrigated area of the district. Soil moisture capacity is specified at the district level and this is assumed constant for all crops in the district. If user has specified irrigation season, orders and requests are only generated within the season. Both irrigation and opportunist requirements can be limited to within an irrigation season.
Temporary Screenshots to be updated with production release 3.3.0
Feature Editor - Irrigator Demand Model (District Configuration)
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The district requirement is adjusted to allow for any district delivery supply escapes and losses associated with delivering water to the district. The volume removed before getting to the crop 
is called the escape volume. The escape volume can either be lost from the system or returned back to the water user as a return flow. This is optional in the demand model configuration and can be added by right clicking the Irrigator(menu item) and selecting Supply Escape. It is expressed as a percentage
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Return Efficiency
Returned water is surplus drainage water from irrigation or from rainfall runoff. This water can be redirected into the on farm storage or otherwise can be returned to the river via a confluence node. This is optional in the demand model configuration and can be added by right clicking the Irrigator (menu item) and selecting Return Efficiency. It is expressed as a percentage
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2) An Opportunistic Target. This target is used to generate opportunistic requests.
Economics
A simple, linear crop water production function is used to predict the reduction in crop yield resulting from water stress. Irrigator records the relative yield as a daily time series. This functionality is still in the prototype stage. For more information consult the Irrigator Demand Model page of the Source Scientific Reference Guide.
Need more information on how Economics works. Seem to only have 2 used parameters in SRG and no explanation
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