Edit Fields that are shown on Lead Creation Page

Edit Fields that are shown on Lead Creation Page

I would like to limit the amount of fields that are shown after hitting 'Create Lead'. 

Essentially, I want our sales staff to only visually show the REQUIRED fields needed on the 'lead creation page. 

To add additional information they need to create the lead and from that page edit the fields. 

Screenshot shows the 'create lead' screen shot that I am looking to edit.