Transactions on group accounts?

Dear people,

I would like to use ERPNext to handle the accounting of a small French non-profit-organisation.

ERPNext provides the French standard accounting plan in its chart of accounts templates, which is great.

However, I’m not sure how to use that chart properly.
As far as I understood, ERPNext doesn’t allow creating transactions against group accounts.

Let’s say I want to register cash being deposited to my bank account.
I’m supposed to debit account “512 - Banque” and credit account “53 - Caisse”, but both of them are groups!

How am I supposed to work this out?

How do the other French people use the chart?

Thanks you in advance.