You may want to try this link:
https://support.apple.com/en-us/HT201320Check the section under "Add an account manually". It tells you how to get to the point where you can pick between POP and IMAP. Perhaps you just have to remove and re-add your HughesNet e-mail account to get it the way you want.
-Liz
If you have a tech or billing question and need help, please start a new thread in the appropriate board. Unsolicited Private Messages may not get replies.