> For the complete documentation index, see [llms.txt](https://docs.reorc.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.reorc.com/data-service/access-control.md).
# Access control
## Manage permission
1. Navigate to the **Data Service** you want to share.
2. Click the **Share** button in the utility bar.
3. View the list of users with access and their roles:
* **Administrators**: Can manage all assets and users.
* **Developers**: Can edit data services.
* **Viewers**: Can view and download data.
* **Guests**: External users with view-only access to specific assets that they have been granted.
**Note**:
* **Project Members** will have their default access to the data service based on their role in the project (e.g., Administrators can manage, Developers can edit, Viewers can view).
* These default access levels **cannot be modified** in the data service sharing settings. To change a user’s role, update their role in the [**Project settings**](/settings/project-settings.md).
## Add users
1. In the **Share** popup, click the search bar.
2. Search for users by name or email.
3. Select a user to grant **"Can View"** access.
4. The user will be added to the parental project as a **Guest**.
{% hint style="info" %}
If you can not find users, please check to ensure they are members of the current organization in the [Organization settings](/settings/organization-settings.md).
{% endhint %}
### Remove users
1. In the **Share** popup, locate the user you want to remove.
2. Click **Remove** next to their name to revoke access.
