Lowering bets on Netent / Evolution Gaming live casinos

[Bassie the Clown]

Dear members,
Does anyone perhaps know how you can lower or remove stack amounts, after you have hit the repeat button on Netent / Evolution Gaming live casinos?
For example: You have 4 chips placed on nr. 0,  7 on nr 10 and 10 on nr 25
Number spin was 13. You hit the repeat button, and want to lower the bet amount on nr. 25 to 6 chips.
Anybody knows how this can be done, or is it just not possible. Obviously right click, on CTRL left click does not work.
Your help would be much appreciated.