In this section is where you will set:
1) Stage of the Prospect quote
2) Expiration date of the quote
3) Date 1 **
4) Date 2 **
5) Time 1 **
6) Time 2 **
7) Identify if it is a quote or invoice
**These values can be customized. Check this article How to customize times and dates description on quotes?
NOTE: If you select the invoice option, invoice date must be selected.