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At the bottom of the dialog you find three four options:
Question mark 
As we are rendering the create screen within our app, some fields might not be displayed. The affected fields are listed here.
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As mentioned above, the Viable Issues Button can be configured. Find all the details on the page Configuring the Viable Issues Buttonpage https://hagen-management.atlassian.net/wiki/x/U4CHUg.
Use-cases
Viable Issues for Confluence Cloud can be used in various use-cases. Basically customers use it to quickly create Jira Issues without leaving Confluence. Have a look at our https://hagen-management.atlassian.net/wiki/x/IgCRUg page to read about the glorious use-cases of Viable Issues for Confluence Cloud inspired by our customers.