Hi @Dom
For displaying row and column headers on multiple pages, you can refer to this document: https://learn.microsoft.com/en-us/sql/reporting-services/report-design/display-row-and-column-headers-on-multiple-pages-report-builder-and-ssrs?view=sql-server-ver16.
For keeping headers visible while scrolling the report, you can refer to this document: https://learn.microsoft.com/en-us/sql/reporting-services/report-design/keep-headers-visible-when-scrolling-through-a-report-report-builder-and-ssrs?view=sql-server-ver16.
Hope these can help you.
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Best regards,
Aniya