To create a workbook just click on the + icon in the navigation bar.
After clicking on the + icon a you will see this blank page.
On this page, you will have to click on the button + Workbook.
They can be created based on either projects, already existing JIRA filters or you can create a new project.
more projects can be selected when creating a workbook based on projects
only one JIRA filter can be selected when creating a workbook based on already existing JIRA filters
The Workbook permissions (the visibility of the workbook) are inherited from its filters.
After you choose how you want to create your workbook, you will have to give a name for it then click on Create.