Dinamic ordering of rows - virtually ordering rows by clicking on up/down arrow within table view

[stuggijo]

Hello everyone,

I have the folowing question:

I am trying to make it possible to order some values dynamically.
I have a row with some names and their sequence (order) in a list, see below (f.e. in a competition where people are frequently having a certain particular position, that might change over time).

What I want to achieve is when I manually click on the up-arrow, the row should move up - when I manually click on the down-arrow the row should move down within the list. So the order no should change within the row i click on and within the row above/below.

I was thinking of having kind of virtual row with the related rows and take this way influence on the order within the related view, but do not know how to achieve it.
Does anybody has an idea what the expression should look like?

Also would be great to be able to type in the new order no into a row, that the currect row with the same number gets a lower order no and all the rows beneath automatically sortet one row down (closing the gap of the order no, where the moved up row was taken away).

Thank you much for your help!