When you need special items for your customers on the Catalog PDF, you may add them to a special group from the device. Please do the following at products
Main menu > products
Select the item to add to the special group
Touch the lable Add to Group 1
Rename the group > done
Touch the button to active the special group > Save
Look for the items you need to add to that group. repete the same action with all the items for that group. Activate group and save
Go to Main Menu > Catalog
Touch All products and select the new group you have done
Touch the send icon
Again the send icon to deliver the special catalog to your customer
Keep in mind that the label on the group can be change as many times you want with different items you choose to include on an specific catalog group. You have 3 groups available. Every group you create will be available on the catalog.