How can we sort the subpanel records with the custom created field?

I added an custom filed ‘order_no’ in relationship table. Now I want to sort my subpanel records by this field.
Is there any possible solution to do it?

If it’s really in the relationship table like accounts_orders (not custom fields table like accounts_cstm), it’s possible, but hard.

There is a similar discussion here

and it includes a couple of links I posted there, which you might find useful.