CRM what to add conditions in layout

CRM what to add conditions in layout

Hello,

I am doing layout content and I have this schema :

When "Y" is "W"      >>Condition 1 (="W" is "W1") = A1, A2, and/or A3
                                 >>Condition 2 (="W is "W2") = B1, B2, and/or B3

I want to ass more condition ("W3" and "W4") but I can't. The button "add condition" disappear after 2 conditions added for one option.

Can you help please ?

Thanks,