Suppliers are the vendors/supplying companies, the companies you buy your stock/items from.
Company, Name (Contact Person), Email, Phone, Address and City input fields arerequired. You can add extra information about the customer as there are 6 custom fields and the select box in front of each custom field is to display this information on purchases.
If the supplier is not company, you can skip the company file with dash symbol (-) so that system will consider it as person.
The inputs for supplier in other modules (purchases and products) are no more select/drop down but ajax calls, you can type in search field to get the suggestions and select any suggestion available in database for supplier. You can add supplier by clicking the Add Supplier menu under People from any page. The interface is almost same as billers and customers, easy to use.