There's actually two different ways of adding accessories inside D-Tools Cloud, this can be done inside the Catalog or directly inside a Quote. Let's take a look at both of the options below:
Adding accessories inside the Catalog:
In order to add accessories inside the Catalog, first you need to make sure you actually have some products downloaded to your personal database under Catalog > My Products. You will use these products as parent items to attach the accessories to. Once you have some products under the Catalog > My Products tab, you will navigate here > open up the product > navigate to the "Accessories" tab and add the desired accessories.
Adding accessories directly inside the Quote:
This might actually be a simpler option of the two. To add accessories inside the actual quote, simply open up the Quote > click on the side menu( three dots) next to any product > and select "Add Accessories".
Video example for both options: