I offered the wrong balance to a beneficiary, can I change it?

You can offer a new balance to a beneficiary by going to the details of the beneficiary you are interested in.
For example, if you have by mistake offered €100 to a beneficiary while you wanted to offer him €120, then you select from the "Beneficiary" tab the beneficiary to whom you want to add the additional amount and when the screen with the beneficiary details opens, select "Add amount", entered €20 in the field and clicked "Add".

However, if you have mistakenly paid a larger amount than what you wanted to pay to the beneficiary, you will have to delete the Beneficiary and then add him again, offering him the amount you would like.
For example, if you have mistakenly offered €150 to a beneficiary while you wanted to offer him €100, then go to the "Beneficiary" tab and select the "Delete" action for the beneficiary you are interested in (Before deleting the beneficiary, see his/her remaining available balance). Then press "Add new" to again enter the beneficiary and the amount you want to offer to him/her.

Caution! If the beneficiary had an available balance from your previous offers and you want him to keep it and add an additional amount to him, then you must enter both his previous available balance and the new amount you wanted to offer him. Based on the example, you must enter the beneficiary €100 + the available balance he had before deleting him as a beneficiary.
Note:
The amounts you give to the beneficiaries belong to your VBAN. If you delete a beneficiary, their available balance from the amount you offered will be added to your balance.