> ## Documentation Index > Fetch the complete documentation index at: https://docs.terminus.app/llms.txt > Use this file to discover all available pages before exploring further. # Start From a Template and Experiment in a Playground > Browse ready-made governance-model templates and turn one into a new model in one click, or open a throwaway Playground to explore and edit a copy of a model without creating any real data. Two related ways to start fast. **Templates** are a browse-first gallery of ready-made governance models you preview and turn into a new model in one click. A **Playground** is a throwaway sandbox where you open a copy of a model in the real UI, edit it freely, and lose every change when you leave. Even signed-out visitors can open a Playground, and nothing in it is ever saved as a real taxonomy, record, or submission. ## Templates A template is a complete, ready-made governance model: a taxonomy plus fields and picklists that express a campaign-naming or UTM scheme. You browse the gallery, preview a template live, and import it as a brand-new model in your account. After import it is a normal, fully editable model. ### Open the gallery The fastest way in is the **Create new governance model** page. It offers three starting points: * **Start from scratch:** build a taxonomy and fields by hand. * **Import from JSON:** bring in a model from a JSON file. * **Or start from a template:** the template grid, described below. The same gallery is also available as a standalone template library page. ### Browse and filter The gallery ships with 12 templates covering common patterns, from a flat starter to multi-business-unit and agency setups. Two filters narrow the list: * **Business** filters by business model, for example ecommerce, B2B, or agency. Picking a specific business model still keeps the universal templates visible. * **Structure** filters by how strict the scheme is: simple, standardizing, or governed. Cards are sorted so recommended **Core** templates appear first, then by structure and business model. `Simple UTM Starter` leads. If a filter combination matches nothing, the gallery shows `No templates match the selected filters.` ### The template catalog | Template | Business | Structure | Core | | -------------------------------- | ---------- | ------------- | ---- | | Simple UTM Starter | Universal | Simple | Yes | | Ecommerce Performance | Ecommerce | Standardizing | Yes | | B2B Demand-Gen Standard | B2B | Governed | Yes | | Enterprise Multi-BU | Enterprise | Governed | Yes | | Regulated / Opaque ID | Enterprise | Governed | No | | Standardized Campaign Vocabulary | Universal | Standardizing | Yes | | Agency Multi-Client | Agency | Governed | Yes | | Content and Lifecycle | Media | Standardizing | No | | ABM Account-Based | B2B | Governed | No | | Paid-Social Creative Testing | Ecommerce | Standardizing | No | | Marketplace Two-Sided | Ecommerce | Governed | No | | Events and Field Marketing | B2B | Standardizing | No | Core templates are the recommended starting points. If you are unsure where to begin, pick a Core template that matches your business. ### Preview a template Select any card to open a full preview with a back link, the template's badges and description, and a live render of the model. The preview also shows a "Who it's for and samples" panel: who the template suits, who it does not, and example campaign values. Those sample values are illustrative only. They are not created when you import. ### Turn a template into a model Open the template's preview and confirm it matches your use case. This imports the template as a new, independent governance model in your account, then takes you to the new model's taxonomies. The new model carries none of the template's identifiers, and changes to it never affect the template or any other model imported from it. Rename fields, add taxonomies, adjust picklists, and tailor everything to your needs. Then publish your first revision. Creating a model from a template requires create permission on governance models. If you do not have it, the **Create Governance Model** button does not appear. On the standalone template library, a preview also offers **Try in Playground**, which opens a throwaway sandbox copy of the template in a new tab. ## Playground A Playground is a disposable scratch copy of a governance model, opened in the real Terminus Hub UI. You get the full model-editing surface (fields, taxonomies, picklists, the model name, workspaces, and the visualizer), but every edit lives only in your browser tab. Nothing is written back to the server, so reloading the tab discards your changes. Think of it as the hands-on counterpart to a read-only shared link. ### Open a Playground You can open a Playground from two places: * **Try in Playground** on a template preview, which opens a sandbox seeded from that template. * **Edit in Playground** on a [shared link or embed](/guides/share-embed), which opens a sandbox copy of the shared model. A signed-out visitor can open a Playground from either entry point, which makes it a no-commitment way to try a model before signing up. ### What you can and cannot do * You can add, rename, and delete fields, taxonomies, and picklists, rename the model, and edit workspaces, all in the real UI. * Every change is ephemeral. It exists only in the current browser tab and is gone when you reload or leave. * The submission flow is intentionally disabled in a Playground. You cannot build or save real campaign URLs there, and workspaces show a "Not available in playground mode" lock. ### Share a Playground A Playground can be opened at three access levels through tokenized URLs: | Access level | What it allows | | ------------ | ---------------------------------------------------------------------- | | **Full** | The owner. Edit content, rename the Playground, and delete it. | | **Editable** | Edit the embedded content, but cannot rename or delete the Playground. | | **Readonly** | View only. No changes. | Hand out an Editable or Readonly link to bring others in. Everyone with an edit link works on the same single snapshot, so this is one-to-one sharing, unlike a shared link, which gives many people the same read-only view. ### Turn a Playground into a real model Because Playground edits are not saved, use **Create Governance Model** from the template preview (or import the model) to create a real, persistent governance model. See [governance models](/reference/governance-models). ## Gotchas * **Playground changes are never saved.** Edits live only in the current browser tab and are discarded on reload. Only the model you opened the Playground from still exists. * **No submissions in a Playground.** The submission builder does not run there, so you cannot generate or save campaign URLs from a Playground. * **Sample values are not imported.** The "who it's for and samples" values in a template preview are illustrative copy, not data created on import. * **Importing a template needs create permission.** Without it, the **Create Governance Model** button is hidden. * **An imported model is fully independent.** After import it is a normal, editable model, unlinked from the template. ## Related Share a read-only view of a model, with an "Edit in Playground" option for viewers. What a governance model is, and how to edit one after importing a template. Build your first governance model end to end.