I would like to see how to define tasks efforts as minutes, as we have sometimes tasks of 30 minutes or 3.5 hours for example. Also, duration can be divisions of a day for small tasks. For example, 4 tasks of 1h each end up to be 4 days in duration.
When trying to change those values for float number, it defaults to "one".
That functionality is possible in Microsoft Project but not taken into account when importing to PSA.
It seems possible since the effort and duration are float values is a float. Only the interface, business logic and calculation engine is limiting the functionality.