There are multiple ways to add Items to a Project: Products, Labor Items, Packages, and Misc. Items.
The Add buttons allow you to add Products, Labor Items, or Packages from your Catalog to a Project. You can also add directly from the D-Tools Library. Click here for details.
The Drop Zone is another method for adding Products, Labor Items, and Packages from your Catalog to a Project. Click here for details.
The New button allows you to create a new Product, Labor Item, or Miscellaneous Item "from scratch" to a Project, i.e. they do not exist in your Catalog. Click here for details.
There are ways to create packages or add to existing Packages (Packages, Allowances, Bundled Cable) within a Project. Click here for details.