Ability to easily add Help Text on intake fields

As a customer, I need to be able to see a description of each Product Category option so that I submit my Idea in the correct space.

As the Ideas Community Manager, I need customers to be able to submit new Ideas in the correct Product Categories. This would avoid me needing to move the Ideas to the correct Product Category and/or reassign the Idea to the correct PM.

Refer to attachment to see what it should look like.