Hide sub question in Question Library for Recruiting?

Hello,

We have a scenario for a client:

Question 1: Which geographic areas match your search?

with Response Type Multiple choices from list

Question 2: Name of the desired city

Now the second question has a controlling question (which is Question 1 in our scenario) and it maps with a specific Controlling Response.

On the Job Requisition Creation Page, when we need to add questions, we can see both question 1 & question 2. Client wants to hide question 2 and it appears automatically when we insert question 1 (as it counts as a sub question of Question 1).

Is this feasible? Has anyone came across a similar requirement?