Explain data controls in Tableau Server & Tableau Online: New in Tableau 2021.3
Tableau 2021.3 lets you control Explain Data at the workbook, permissions and site level — here's all three.
- Authors can toggle Allow Explain Data from the Data menu via the data source's Explain Data settings, or through the cog inside the Explain Data pane when viewing a data point.
- Server and site admins can disable Explain Data under Settings > General, which on Tableau Online applies to the whole instance (one site) and on Tableau Server applies per site.
- A new Explain Data permission appears in a dashboard's permissions, letting authors grant or deny access to specific users or groups.
- A common use case is training users, then adding them to a group that unlocks Explain Data so you know it is being used correctly.
Tableau 2021.3 gives you three independent ways to control who can use Explain Data — a workbook setting for authors, a site-level switch for admins, and per-dashboard permissions — so you can decide exactly where and by whom this feature gets used.
Explain Data lets viewers click a data point and get automated explanations for it. This video covers the new controls added in 2021.3 for restricting or enabling that capability at different levels.
- Toggle Explain Data from the data source 0:13
As an author, go to Data > [your data source] > Explain Data Settings and untick or tick Allow Explain Data. This is a new, more discoverable route to a setting that governs the whole data source.
- Toggle it from the Explain Data pane itself 1:01
Alternatively, click a data point to open Explain Data, then use the cog icon in the bottom right of the pane to reach the same allow/disallow control. This route already existed before 2021.3 — it's just another entry point to the same setting.
- Disable it site-wide as an admin 1:23
Server and site admins can go to Settings > General and switch off Explain Data there. On Tableau Online this disables it for your entire instance (since one instance is one site); on Tableau Server the setting applies per site, so you can control it separately across multiple sites.
- Control access per dashboard with permissions 2:09
Open a dashboard's permissions (via the three-dot menu), and you'll find a new Explain Data icon alongside the other permission types. Use this to grant or deny specific users or groups the ability to run Explain Data on that particular visualisation.
- Combine the controls to govern rollout 3:00
A practical use case is training users on Explain Data first, then adding them to a group that's been granted the dashboard permission — so you know it's only being used by people who understand it properly, while admins retain a site-level kill switch as a backstop.
- On Tableau Online, the site-level admin setting disables Explain Data for your whole instance since each instance is only one site.
- On Tableau Server, the same admin setting is scoped per site, so different sites can have different Explain Data availability.
- The workbook-level toggle via the data source's Explain Data Settings appears to be new in this release, whereas the cog-in-pane route already existed.
Reach for this when you're rolling out Explain Data cautiously — training a subset of trusted users or managers first via permissions, while keeping an admin-level off switch available if you need to shut it down more broadly.
How this Rollup was made provenance & method
A Rollup is drafted by AI from the video's transcript, then reviewed and edited by Tim. Everything used to produce this one is listed below — the model, the exact prompt, and the source video — so the process is transparent and reproducible.
- Transcription
- On-device — NVIDIA Parakeet v3 for recent videos, OpenAI Whisper large-v3 for earlier ones. The transcript never leaves the machine or gets published.
- Drafting
- Claude Sonnet 5 in the cloud, from that transcript.
- Prompt
- The exact Rollup prompt (v2) — the full system prompt, unedited.
- Source video
- Watch on YouTube
- Drafted
- 5 July 2026 at 09:38
- Reviewed & edited
- 5 July 2026 at 09:41 · by Tim Ngwena
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