---
title: Share Primary Google Calendars with External Users via GAT Flow
description: "## Share Primary Google Calendars with External Users via GAT Flow In [GAT Flow](https://gatlabs.com/knowledge/tech-tips/flow-overview/), [Google Workspace](https://workspace.google.com/) **Admins** and/ or [Delegated Auditors](https://gatlabs.com/knowledge/tech-tips/gat-flow-delegated-auditor/) can share primary Calendars with external emails or well-known internal emails, so others can automatically see a given user's…"
url: "https://gatlabs.com/knowledge/tech-tips/share-primary-google-calendars-with-external-users-via-gat-flow/"
updated: "2026-06-11"
category: "Email Audit & Management"
tags:
  - GAT Flow
---

# Share Primary Google Calendars with External Users via GAT Flow

## Share Primary Google Calendars with External Users via GAT Flow

In [GAT Flow](https://gatlabs.com/knowledge/tech-tips/flow-overview/), [Google Workspace](https://workspace.google.com/) **Admins** and/ or [Delegated Auditors](https://gatlabs.com/knowledge/tech-tips/gat-flow-delegated-auditor/) can share primary Calendars with external emails or well-known internal emails, so others can automatically see a given user's Calendar(s).

You can perform this action on a single account(s) or in bulk by selecting multiple users for the workflow.

## Step 1.

First, create a workflow, and navigate to **Flow > Create workflow**.

Next, fill in the details:

- Name – enter a name for the workflow
- Type – select the type of workflow you want to use (**Modify** in this example)
- Next – click to proceed

![Name – enter a name for the workflow Type – select the type of workflow you want to use (Modify in this example) Next – click to proceed](https://gatlabs.com/knowledge/wp-content/uploads/2023/05/2026-06-11-15_53_28-.png)

## Step 2.

In the next step, search for a user. Select a single user or multiple users’ accounts where the actions will be applied.

Search and add the users via** Search** for a user, group, org. unit, or classroom, or import them.

![In the next step, search for a user. Select a single user or multiple users’ accounts where the actions will be applied. Search and add the users via Search for a user, group, org. unit, or classroom, or import them.](https://gatlabs.com/knowledge/wp-content/uploads/2023/05/2026-06-11-15_54_37-.png)

Once users are selected, click on **Proceed to actions**.

## Step 3.

Then, to choose actions, click on the **(+) button** and search for the action in the **Add action**

![](https://gatlabs.com/knowledge/wp-content/uploads/2023/05/2026-06-11-15_55_40-.png)

Next, you will see all the options available, search and select the action **Share user primary calendar:**

![](https://gatlabs.com/knowledge/wp-content/uploads/2023/05/2026-06-11-15_56_49-Greenshot.png)

The selected action will appear in the workflow. **Double click** to open and fill in details.

Enter the email address of the external user or group.

Next, select the permissions you wish to give the external user to your local users' primary Calendars.

- Select users, groups, domains, or predefined values
- Permission pick the permission
  - Owner
  - Writer
  - Reader
  - Free/Busy
- Subscribe
- Send invitation email - enable or disable it

![](https://gatlabs.com/knowledge/wp-content/uploads/2023/05/2026-06-11-15_58_50-.png)

Once ready, click on the "**send approval request**".

## Step 4.

Last, after sending, the Security Officer has to approve the request. They will receive an email that will lead them to the approval page.

![](https://gatlabs.com/knowledge/wp-content/uploads/2023/05/Share-cal-externally-4-1024x651.png)

## Result

Once approved by the Security Officer, the workflow will run.

As a result, an external user(s) will receive an email notification that the local user(s) wanted to share their primary Calendar with 'Free/Busy reader permissions.

If "**send invitation email**" is used, the user will receive an email as follows in their Gmail account.

![If "send invitation email" is used, the user will receive an email as follows.](https://gatlabs.com/knowledge/wp-content/uploads/2023/05/2026-06-11-16_04_56-Greenshot.png)

## Related Posts

- [Share Primary Google Calendar with Specific Users and Groups](https://gatlabs.com/knowledge/tech-tips/share-users-primary-calendar-to-specific-users-and-groups/)
- [Remove Sharing Permissions of Users' Google Calendars with GAT Flow](https://gatlabs.com/knowledge/tech-tips/remove-sharing-permissions-of-users-calendars-with-gat-flow/)
- [Remove Users and Groups from the User's Calendar with GAT Flow](https://gatlabs.com/knowledge/tech-tips/remove-users-and-groups-from-user-calendar/)