Hi Adrien,
That is actually where the reply form for the forum post is located. Unfortunately, it is not possible to move this to other areas of the template without some degree of customization.

Unfortunately we cannot accommodate your request currently as it is beyond our support scope's policy as outlined in http://stackideas.com/support

Having said that, if you require us to perform the customization for you, you can always request for a quote from us at https://crm.stackideas.com and select "Customizations" . Our sales person would be glad to send you a quote for the customizations that you have requested.