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The SIOU calculator supports BRS requests to determine optimal base curve selection, so it is not necessary to set up base curve charts for Siou designs.
Setting Up SIOU Digital Type
The SIOU calculator uses different LNAM codes for the same design in different materials, so the LNAM codes are set up in a VCA label table named "SIOU".
If the SIOU/LNAM table is not set up under "Devices", "VCA Label Table Settings", then you will need to download it using the "Import from Web" option
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The device setup screen for SIOU needs to be set to use the SIOU VCA label table:
Setting Up SIOU Lens Designs
The SIOU design should be set up with the correct LNAM value, using similar to the following; make sure the "Digital Type" is set to the correct LDS vendor. On the Digital tab, leave the LNAM blank (since the LNAM is different for different materials and is populated by the SIOU VCA label table), use BRS requests, and the designs are centered on the frame.
set the flag to "Center Design on Frame". These settings will be automatically populated if you use the SIOU.CSV file from the Digital Types setup screen. 
There is a SIOU.CSV file supplied with Rx-Universe beginning in version 7.07.00 which makes setting up SIOU designs very easy.
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