# Board settings > Board title, background, card numbers and the board key, members and visibility, the confidential setting, custom fields, stale cards, retention, the calendar subscription, the public page, webhooks, copy and template, export and deletion. Source: https://contals.com/docs/en/settings/board/ Last updated: 2026-10-19 The board settings page holds the board's title, background, card numbers and board key, members and visibility, the confidential setting, custom fields, the stale-card setting, the retention of done cards, the calendar subscription, copy and template, export and deletion. Open it from the board header → **Settings**; most changes need the admin role on the board. ## General - **Title** of the board. - **Background:** a color to tell boards apart. ## Card numbers Every card has a number with the board key in front, for example `GEM-12`. The number never changes, so people can name a card by it – on the phone, in an e-mail or in the minutes. - **Show card numbers** (on by default): switched off, cards, the card details, the board header, links, e-mails, chat messages and calendar subscriptions show no card numbers. Search still finds a card by its number, and the [API](/docs/en/ai/api/) keeps returning it. - **Board key:** type a new key and choose **Change key**. A key has 1 to 10 characters – letters A–Z and digits, starting with a letter – and is unique in the workspace. Card numbers stay the same: `GEM-12` becomes `FEST-12`. - **Earlier keys keep working:** old links, a search for `GEM-12` and the API still find the card, also after the card moved to another board. The section lists the board's earlier keys; each one stays reserved for this board, and the board can take it back later. Only board admins change these settings. The board's activity shows every change. ## Members and visibility - **Private:** only the members listed on this page see the board. New boards are private. - **Workspace:** every member of the workspace sees the board (volunteers and viewers with their limited roles). - Add people by e-mail and choose their board role (Viewer, Contributor, Editor, Admin). People outside the workspace join as guests and see only this board. Everyone gets an invitation first. See [invitations and roles](/docs/en/team/invitations/). ## Confidential board For sensitive content – pastoral care, health or personnel matters – a board admin switches on **This board is confidential**. While it is on: - links to the board and its cards carry no titles (`…/b/brd_…` instead of `…/b/pastoral-care-brd_…`), in the app, in e-mails, calendar subscriptions and the API; the browser tab shows the board key instead of the title; - e-mails and the summary e-mail name it only as "a confidential board", and inbox entries carry no card titles; - chat notifications carry no content, nothing of it is sent to your organization's AI model, and it is not available through the API, the MCP server or to AI agents; - every opening is recorded in the [audit log](/docs/en/settings/audit-log/), and so is switching the setting on or off; - the header shows **Confidential** to everyone on the board. Old links with the title keep working. Public pages of the board (booking pages, polls) keep working too – don't use them on sensitive boards, see the [sensitive-boards guide](https://contals.com/en/data-protection/sensitive-boards/). Organization owners and admins can also remove titles from the links of all boards: [organization settings → Titles in links](/docs/en/settings/organization/#titles-in-links). ## Custom fields Define the fields every card of this board can have – text, number, date, checkbox or a dropdown with colored options – and whether they show on the card front. See [checklists and custom fields](/docs/en/boards/checklists-and-fields/). ## Stale cards **Stale cards** marks open cards without any activity for a number of days you choose – for example 14 or 30 (off by default) – with an hourglass, so forgotten work stands out. The marker archives nothing. The board filter and the summary e-mail use the same setting. ## Retention of done cards **Retention of done cards** archives or deletes done cards automatically some days after they were completed – off by default. Choose **Keep**, **Archive** or **Delete**, pick the **Days after completion** (for example 90 days) and choose **Save rule**. - The rule runs every night; each run appears in the board's activity, for example "archived done cards: 3 (rule: after 90 days)". - **Delete** cannot be undone: the cards' comments, checklists and field values are removed, and their texts are erased from the activity. Choosing it shows a warning, and you tick **I understand that deleted cards cannot be restored** before you can save. - Cards that hold data of people without an account – a date poll or a booking – are archived instead of deleted. - Only board admins change the rule; everyone else on the settings page sees which rule applies. - Copies of the board and templates made from it do not take the rule along; the board export names it. - While the organization is read-only because of an unpaid invoice, or paused on the free plan, deleting goes on and archiving waits. ## Calendar subscription **Calendar subscription** creates your personal, secret link with every due date of this board for Google Calendar, Outlook or Apple Calendar. It stops working when you lose access to the board. See [subscribe in your calendar app](/docs/en/views/across-boards/#subscribe-in-your-calendar-app). ## Public page Board admins publish the board as a read-only web page for anyone with the link: **Publish this board as a public page**, then choose what **The page shows**, copy the link or make a **New link**. Never for a confidential board. See [public boards](/docs/en/boards/public-board/). ## E-mail to this board Board admins turn on the board's own e-mail address: a mail from a member becomes a card in the list they choose. Never for a confidential board. See [e-mail to a board](/docs/en/boards/email-to-board/). ## Webhooks Board admins send this board's events to another service – their own server, Zapier or Make: **Webhooks of this board** opens the webhooks page for this board. Not on a confidential board. See [webhooks, Zapier and Make](/docs/en/integrations/webhooks/). ## Copy and template - **Copy board** creates a new board with the same lists, labels, custom fields and Power-Ups, with or without the cards; members can be invited to the copy. - **Save as template** turns the board into a template for the whole workspace. See [templates, copy and move](/docs/en/boards/templates-copy-move/). ## Power-Ups Switch Power-Ups on or off on the board's **Power-Ups** page, where their settings live too (for example chat channels or the countdown) – see [Power-Ups](/docs/en/power-ups/). ## Export **Download export (JSON)** saves everything on the board – lists, cards, comments, Power-Up data, booking and poll contacts and the history of the last 13 months (a board keeps 13 months of history; older changes are folded into the board). **Download cards (CSV)** saves one row per card for a spreadsheet. Only board admins can export; guests and volunteers cannot. See [data export](/docs/en/data/export/). ## Archive **Archive board** moves a finished board into the workspace's archive: read-only, out of the board list, search and calendars, and not counted towards your plan's boards per workspace. Restore it there or in the board's banner. See [archiving boards](/docs/en/boards/archive/). ## Delete the board In the danger zone. Type the board key to confirm. The board disappears at once for everyone and is erased after 14 days.