I've had multiple clients ask for this capability. Duplicating tasks just so different people can be assigned with different allocations is not seen as a good workaround. It seems to be a fairly standard use case for managing resources and I recommend it is considered for future implementation in Resource Management/Smartsheet.
Hi! I'd like to also ask for the same feature update. We have large, complex projects to manage and having to duplicate rows for resourcing creates extra complexity and room for error. It would be really great to assign different % allocations for different individuals within the same line item