When new users sign up through the public signup page, you can first control their access to your store with a limited product catalog.
To set up this default sales product list, follow these steps.
Step 1:
Go to Company Settings. Under Basic Settings, click 'Manage' beside the eCart's default Selling Products line in ECART Settings.
Step 2: Select Products for the List
You can choose whether to automatically display Products or Raw Materials in eCart.
Select the desired categories along with their products and variants (if any) to include in your default selling list, then click 'Save' once done.
