The evaluation scale method enamble only integer grade from 1 to 5. Further in the summary table records are not sortable by evaluation. Therefore my suggestion is to have a single numerical value which sintetize the overall evaluation. The scale is regulated by internal policy (i.e. from 1 to 100, from 0 to 30 with comma). This value can be imported by excel and overwritten.
At the end you can sort in Personio by this metric, for instance in the “evaluation” feald.
There are many evaluation policy, criteria and data analytics appied to companies evaluation processes. Anyway you will always come up to a ranking sorted by a certain metric. Keep track at least of one custom metric is crucial.
You could keep the current calculation system by weights as default number, which can manually or by import be changed.
Thanks,
Luigi