Yes, we can add hidden input field type and add a fee that will be applied automatically once the user adds the product to the cart. The admin can set product conditions under the Product Conditions tab so the fees will be applied to the matched ...
We can disable the inquiry form to the guest users by de-select the NOT LOGGED IN option under the Customer Groups. Reference guide: https://magediary.com/docs/product-inquiry-support.html#general-information
To enable the inquiry form only to the specific stores, select the stores that you want to enable in the Store View field under the General Information tab. Reference guide: https://magediary.com/docs/product-inquiry-support.html#general-information
Yes, the admin can set the conditions like show the inquiry form only for products which attribute set is Bag or category is Gear. Reference guide: https://magediary.com/docs/product-inquiry-support.html#conditions