Hello,
1: To offer the specific products you can use “Products” element with Wp-Bakery as shown in the below screenshot:
http://prnt.sc/p55y9k
After adding this element you have to enter the product id’s which you want to show: http://prnt.sc/p55z9b
2: Yes you can offer every category of product. To do this, you can use “Product Categories” element with Wp-Bakery page builder:
Screenshot: http://prnt.sc/p55zo4
Then set the sorting order and number of columns and hit save button and then update your page:
Screenshot: http://prnt.sc/p561nb
Best Regards.