In page edit mode, type ‘/excel’ex’, then the macro ‘Excel-like Tables’ will appear on appears in the list.
...
There are two options that you can choose when creating a table:
Create a new table
Create from templates
...
Create a new table
‘Create a new table’ will open a blank excel sheet.
...
Create from templates
Create from templates will allow users to use the pre-built templates or users' saved templates. If you have saved your work before as a template, you can reuse using this feature.
...
Just a second. An empty table will appear.
It allows you to edit a table or import your Excel file from File > Import > Excel menu.
After editing or importing, push the ‘Save’ button then, ‘Exit to Confluence’ button.
...
You see the preview of a table.
...
After you save the page, you can see the table on the page.