populate value of multiple field (or other data field) to other multiple field

Hi! I didnt find a working solution for this:

For example I have a dropdown with time areas (morning, afternoon, evening)

I have 3 hidden multiple dropdowns (morning: 8-9,9-10,10-11,11-12), afternoon: 3-4,4-5,5-6) etc.

Then i have a multiple dropdown which is empty. Let call it "time slots output" with value (morning, afternoon, evening)

When you choose for example morning, it should populate the values of the hidden morning dropdown to my "time slot output" multiple dropdown field.

I know i could fix that with hide/show etc, but I use zapier and just want to transfer one field instead of all.

If you are going to be assigning values to each option in a Drop Down:

And obtaining them in a Form calculation field:

There is no need to create conditions to output the same result in the same Calculation field. I have disabled your conditions, and the calculation fields are working fine now: https://form.jotform.com/70354563664965 

Let us know if you need more help, we will be glad to assist you.

Thank you! This helped, but I got a new problem. I opened a new question