How to install Table Exporter to CSV/Excel Addon?
Install the Add-On from Marketplace :
Log into your Confluence instance as an admin.
Click the admin dropdown and choose Atlassian Marketplace.
Click Find new add-ons from the left-hand side of the page.
Locate Table exporter to CSV/Excel for Confluence via search.
Click Free Trial to begin a new trial or Buy now to purchase a license for Table exporter to CSV/Excel for Confluence
Enter your information and click Generate license when redirected to MyAtlassian.
Click Apply license.