[GNC] How to customize the columns shown in the "generic import transaction matcher" (when downloading transactions from my bank) ?

[a b]

HI there,

*Just joined the list (as I found nothing helpful on this on Google and
this list seems to be the most up-to-date place for asking gnucash-related
stuff)*.

For a while now, I'm using the

[Actions --> Online Actions --> Get Transactions...]

feature to get my banking transactions into gnucash. So far so good.

However, the "generic import transaction matcher"-windows which pops up as
part of this process is not much to my liking: It shows a number of (to me)
irrelevant columns; I'd like it to just always show a) the columns I'm
interested in and b) remember the ideal width per column (as set by me
*once*). How to achieve this? Possible (and if so, how easily
accomplishable)?

Thanks!

(Slippin') Jimmy