> For the complete documentation index, see [llms.txt](https://help.parta.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.parta.io/how-to/how-reviewers-can-leave-comments-on-a-course.md).

# How Reviewers Can Leave Comments on a Course

Collaborate with people outside your company and Project teams to improve review process and boost productivity.

## Grant a Reviewer a Guest Role with Comments Permission

Invite a reviewer as a new participant of the Project team to have **permanent access** to the course . 

<figure><img src="/files/mZymC5zr766wI4yORpfa" alt=""><figcaption></figcaption></figure>

{% stepper %}
{% step %}
[Open a Project](https://help.parta.io/project-general-settings/set-a-project/manage-a-project) and go to the **Team** tab.
{% endstep %}

{% step %}
Click **+**.

A pop-up window will appear.
{% endstep %}

{% step %}
Select **New member**.

A pop-up window will appear.

<figure><img src="/files/50LGp6vxjlzeGWpvsinZ" alt=""><figcaption></figcaption></figure>
{% endstep %}

{% step %}
Enter an email and press Enter.

You can add multiple emails.
{% endstep %}

{% step %}
Select **Comments** permissions from the **Company permissions** dropdown menu.
{% endstep %}

{% step %}
Add a personal message at the **Message** field (optional).
{% endstep %}

{% step %}
Click the **Send** button.

A user will get a **Guest** role with **Invited** status at the Company users tab and Participant role at the Project team tab.
{% endstep %}
{% endstepper %}

A reviewer will receive an email with a link to a course and will be able to view and [comment a course](/collaboration/set-comments/create-a-comment.md).

{% hint style="danger" %}
The confirmation link expires in 24 hours.
{% endhint %}

## Invite a Reviewer via Publick Link for Commenting

Create a user with **temporary access** to the course without logging into Parta.io.&#x20;

<figure><img src="/files/kRQZQJchr3OQwpuNBriV" alt=""><figcaption></figcaption></figure>

{% stepper %}
{% step %}
[Open a Project](/project/set-projects/manage-a-project.md) or [an editor ](/editor/work-in-the-editor.md)and click the **Share** button.

A pop-up window will appear.
{% endstep %}

{% step %}
Go to the **Comment** tab.
{% endstep %}

{% step %}
Type an email in the input field and click **Enter** to share a link to a user out of company users list.
{% endstep %}

{% step %}
Click the **Invite** button.

A user will get a **Commentator** role at the Company users tab and Participant role at the Project team tab.
{% endstep %}
{% endstepper %}

A reviewer will receive an email with a link to a course and will be able to view and [comment a course](/collaboration/set-comments/create-a-comment.md) **for 21 days**.

{% hint style="danger" %}
The public link for commenting expires in 21 days.
{% endhint %}