Disable cart rule for customers already in a customer group with discount

[KoreLewi]

Hi!

I have encountered the following problem: 
I have a customer group in which customers get a 10% discount on their order. 
I created a cart rule that gives a 10% discount on all products.

Is there a way to prevent users in the customer group from getting the second 10% discount? Because currently they have 20% discount in total.

I could not find a way to prevent this in the cart rules settings page.






PrestaShop 1.7.6.5

[lordignus]

In the conditions tab for the cart rule, move your 10% off customer group into "Unselected Groups".