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This page covers adding access to more workspaces and channels, and how access stacks when several bundles apply to the same place. It assumes you have already paired a workspace and created an Access bundle. You must be an Owner in your Claude organization to attach bundles. A scope is where a bundle applies: Default Slack access (the organization-wide root), a workspace, or a single channel. Bundles inherit downward through those scopes, and when credentials overlap, the narrowest scope wins.

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How scopes inherit

Bundles stack downward. A channel gets whatever is attached at Default Slack access, plus its workspace, plus anything attached to the channel itself. Nested boxes. The outermost box is the Default Slack access scope: a bundle attached here is the baseline every channel gets. Inside it, two examples. Outside the workspace box, a channel called another-team in a different workspace gets only the default bundle. Inside the workspace box, which adds an optional bundle for channels inside it, two channel boxes: a public channel called general, with no channel bundle, gets the default plus the workspace bundle; a private channel, marked with a lock, with its own channel bundle, gets all three, the default, workspace, and channel bundles. The same stacking applies in reverse. Detaching a bundle from a channel removes only that channel’s additions, and bundles attached at the workspace or Default Slack access still apply there. Memory is also scoped, but differently: there is no organization-wide memory, public-channel entries are shared across the workspace, and a private channel reads workspace memory but writes only to its own store. See What Claude Tag remembers. DMs run under the user’s own claude.ai account, so bundles attached here apply only in channels. See how DMs work in this model.

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Attach the bundle

Attaching binds the bundle to a workspace scope or to a single channel under it. The binding takes full effect in new threads only. A thread already running keeps the skills, plugins, and custom instructions it started with. A connection added after a thread started still works there if you ask Claude to use the service by name, but Claude doesn’t announce it, so test with a new top-level thread after attaching a bundle.

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Attach to a workspace

Each paired workspace already has a scope; bind a bundle in the scope’s Access bundles section. On the Access bundles page in the left navigation, each bundle’s card shows where it’s used. To add another workspace, pair it first.

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Attach to a channel

Add channel scopes under a workspace for channels that need access beyond the workspace baseline:
  1. On claude.ai/admin-settings/claude-tag, find the workspace on the Slack tab under Claude Tag’s access and select Add channel.
  2. Paste the channel’s ID into the Channel ID field. Channel IDs start with C, or with G for some older private channels. Copy the ID from the channel’s details in Slack.
  3. Save, then bind bundles in the new scope’s Access bundles section, the same as for a workspace.
In a channel shared across more than one workspace in your Enterprise Grid, bundles bound to the channel or its workspace don’t apply. See Channels shared across workspaces in your Enterprise Grid for what Claude does there instead.
A bundle attached to a public channel grants its access to anyone who joins that channel. In most Slack workspaces, anyone can join a public channel, so the channel’s join policy becomes the effective access control for whatever the bundle grants. Keep elevated credentials in private-channel scopes.

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Precedence when bundles overlap

A channel sees the union of every bundle bound at the channel itself, its workspace, and Default Slack access. Narrower scopes don’t replace wider ones; they add to them. When two bundles in the resolved set carry rules for the same host, the rule from the narrower scope wins. Within that union, fixed rules decide which credential and which instructions apply.

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Which credential wins

When two bundles each carry a credential for the same host:
  • The credential from the narrowest scope is used: channel beats workspace, which beats Default Slack access.
  • Within the same scope, the order isn’t admin-configurable. Avoid binding overlapping credentials at the same scope; if you can’t predict which key acts, neither can a security review.
  • There is no fallback. If the winning credential gets a 401 or 403, Claude does not retry with the next one.

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Repositories and plugins

Repository grants and plugins from every bound bundle are combined as a union; a channel gets every repo and plugin from any bundle in its chain. The Access summary section, shown when you select a scope on the Slack tab, lists the resolved set.

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Custom instructions

Per-scope custom instructions are concatenated, Default Slack access first, then workspace, then channel. A channel’s instructions add to, rather than replace, what’s set above it.

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Instruction layers

Three kinds of standing instruction can apply in a channel, written by different people: Channel members can shape how Claude responds in their channel through memory, but they can’t change which credentials or repositories it has; that’s bundle configuration. See who controls what for the full split. Custom instructions are read ahead of the conversation and take priority in practice, but they’re guidance, not an enforced guardrail. Don’t rely on them to block actions; use access controls for that.

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Add custom instructions

Each scope can carry custom instructions, which are standing guidance Claude reads in every session there, like team conventions or where to file tickets. The field is in the scope’s settings dialog, opened from the ••• button on the scope’s panel. Channel members reach the same field for the channel scope through the Configure page, linked in the footer of any Claude reply, without going through admin settings. Both entry points write the same instructions, so a change from either place is visible in the other. The field is plain text, inserted as written; there is no include or template syntax, and {{include:...}} is passed through literally. To give Claude a repository’s CLAUDE.md, grant the repository and name it in the request; its CLAUDE.md loads after the clone completes.

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Restrict who can set channel instructions

By default, anyone in a channel who is also a member of your Claude organization can edit that channel’s instructions from the Configure link in Claude’s reply footer. The Channel member edits setting in a scope’s Advanced settings controls this. A chain of scopes that all inherit resolves to Allow. Set Block at the workspace or Default Slack access scope to lock channel instructions across every channel beneath it.

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Verify the bundle is live

  • The bundle card lists the workspace or channel you attached under the places it’s used.
  • A test task in the pilot channel uses the bundle’s connections, and the action appears in the connected service’s audit log under your service account.
Repeat the attach step for any additional scopes that need elevated access, then widen per the rollout patterns.