Sort and Filter
Click the down-arrow button on the column header to open a dialog to sort and filters the column.
Read-only fields are grayed out.
Pro tips: To understand why the fields are read-only, please see the articles of Excel-like Issue Editor for Jira: Knowledge base and workarounds:
You can use some useful functions from the context menu. Right-click on the sheet and select the menu.
Some functions are only available under hierarchy view mode.
Open view issue screen.
Expand all collapsed rows under hierarchy view mode.
Open create issue screen.
Copy selected issue.
This function is similar to "Clone", but creates a new issue.
Create one child issue under hierarchy view mode.
Delete selected issue.