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Press the arrow in front of the section to switch between unfolded and folded .

More detailed information about default Jira setup for issues can be found on the following Atlassian page: view an issue.

Comments

Adding comments to an issue is a useful way to record additional detail about an issue, and collaborate with team members.
Comments are shown in the Comments tab of the Activity section when you view an issue.

In JIRA Service Desk projects, comments are segregated by internal vs external visibility. Meaning that I am able to select whether I want to Share with customer or Comment Internally.

• Share with customer makes the comment visible to everyone who can see the issue/request. (Jira Service Management agents , reporter and participants)
  When this button is used the reporter and all participants will receive a notification by e-mail.
• Internal comments are not shown on the portal view of the issue. 
  When this button is used then only Jira Service Management agents (licensed Jira Service Management user) are able to see the comment.
  

Note:  Jira Service Management agents (licensed users) are able to see both internal and external comments

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 Keyboard shortcut: Press M on your keyboard to jump straight into the comment field and start typing.

Workflow

In a issue under the Details section via the  (view workflow) button next to the Status field the complete workflow can be opened for display.

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