FYI you can accomplish both of your goals with my Flowsana integration, as follows:
Flowsana’s Forms Support allows Premium-level Asana subscribers to assign an Asana Form to a user, no Business subscription required. (Also, in addition to the option of always assigning a Form to one particular user, Flowsana lets you optionally specify the assignee in a Form field.)
In term of placing the Form submission into a Section, you can do this via a Flowsana Rule (also available to Premium-level Asana subscribers). You can elect to always put the Form submission in the same section, or you can have it placed into a different section depending on a value which the Form submitter enters into a Form field.