Google Apps Script / GCP Expert — Enable Custom Menu Across All Sheets (Private Add-on)

Job ID: 39794881

Budget: $10 – $15 USD

I already have the Apps Script code that creates a custom menu inside a Google Sheet.
The code works fine, but currently the menu is only visible in the specific Sheet where the script is bound.

What I need:

Guidance and step-by-step help to deploy this menu as a private add-on so that it automatically appears in all Google Sheets in my account.

This involves setting up a standalone Apps Script project, linking it to a user-managed Google Cloud Project, configuring OAuth consent, and deploying it correctly using Google’s current (2025) Apps Script deployment flow.

I will write and maintain the Apps Script code myself. The freelancer’s role is to show me (via screenshare or video) the exact process of activating and installing the add-on account-wide.

Deliverables

- Live walkthrough (screenshare or step-by-step video) demonstrating the deployment process.

- Validation that after the process, the custom menu is visible in all Sheets I open in my account.

Selection Criteria

- Must have recent, proven experience with private Google Sheets add-ons under the current Google Apps Script + GCP system.

- Must demonstrate a similar deployment they have done (via screenshare or video).

- Clear communication and ability to guide me efficiently without trial-and-error.