Split transaction -> keep total

[lubos]

This has been mentioned before, see:

Splitting transactions - auto balance left to allocate?

After importing bankstatement, some transactions need to be split between 2 or more accounts. When I add line 2, 3 etc and allocate an amount to an account, I would then like to automatically see the $ amount left to allocate to save time and avoid mistakes in splitting expenses. It is too easy to make an error. Is there a way to turn this on?

I’m actually planning to implement this by end of this month.