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A new field labelled Use Supplementary Rates for Oncosts is available from the 11.37 this release on, in pay and bill agreement headers configured in the Rates and Rules module, as highlighted in the example below.
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However, the Use Supplementary Rates for Oncosts field is available on pay agreement headers only if the Enable Pay Oncosts Function option is enabled in Agency Portal Maintenance > Portal Maintenance Hierarchy > Country Settings > Oncosts.
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