Pit Accumulation
Source file: origin-reserve-setups-constraints-model-accumulation.htm
Use the Pit Accumulation constraint  to define the maximum volume or amount of tonnes that can be mined per pit per period. 
The Item drop-down menu allows you to specify the item to set the accumulation constraint against. 
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Click the
 button once to copy the properties of the current period to the next period. - 
                                                
Double-click the
 button to copy the properties of the current period to the subsequent periods until the end of the schedule. - 
                                                
Alternatively, copy a cell's setting using Ctrl+C , then paste it into selected cells with Ctrl+V.