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# What's new in Sigma

> Sigma release notes for Oct 24, 2025: Impersonate a user in API calls, new endpoint to assign multiple user attributes to a team, and more.

## API

### Impersonate a user in API calls (Beta)

A user assigned the Admin account type can impersonate other users in API calls, for example to retrieve and display the contents of their My Documents folder in embedded content.

For more details and an example test Python script, see [Impersonate users](https://help.sigmacomputing.com/docs/impersonate-users).

### New endpoint to assign multiple user attributes to a team

The following endpoint to assign user attributes to a team in bulk is now available:

* [Assign user attributes to a team](/reference/assign-user-attributes-to-team) (`POST /v2/teams/{teamId}/assignedUserAttributes`)

## Workbook elements

### Configure chart axis marks

Configuring custom chart axis marks, like ticks and grid lines, is now supported. You can change the count or step size of both major (labeled) and minor (unlabeled) chart axis marks.

See [Configure chart axis marks](https://help.sigmacomputing.com/docs/configure-chart-axis-marks).

## Workbook features

### Configure global BCC email addresses

You can now configure global BCC recipients for all emails in your custom email branding settings.

See [Custom email branding](https://help.sigmacomputing.com/docs/custom-email-branding) .

## Bug fixes

* The **Last sync** date visible when browsing connection objects reflects the last time Sigma attempted to sync an object, even if a sync was not performed because no data had changed.
* Workbooks created using the [Create workbook from template](/reference/save-workbook-from-template) endpoint (`POST /v2/templates/save_workbook`) with `updateAutomatically` set to `true` now update properly for cases when the template was shared from another organization.