Quotes and sales orders:

Firstly you have to click the quotes and sales orders from task bar 

Then click on the quotes following window will appear

give all the information in it like  give the requirements such as customer id , customer PO, quotes no. sales rep ,quantity ,item, description unit price ,amount then following window will appear

Then save it

After that click on  the sales order then following window will appear :

Then the requirements quantity that is sale , description , item, etc fill it all and then save it.

Then save it.