Creating and accessing your Jira issues on a board helps avoid busy work and switching between different tools to transfer information.
There are 6 ways in which you can add Jira issues to a board:
Convert objects (shapes, cards, texts) into Jira issues,
Paste a link to a Jira issue anywhere on the board,
Import issues with an import zone (Pro plan feature),
Drag and drop issues from the right-side menu,
Use the context menu to create or import issues (Whiteboards for Jira only),
Create new issues from the toolbar (Whiteboards for Jira only).