For users with a custom CRM that is attached to GHL via webhooks, provide a URL to the Agency/Sub-Account that allows the web app to launch the GHL app to dial out.

For example, in the custom CRM a user could click the phone number of a client and have it OPEN the GHL app via a custom URL and dial out from the customers sub-account.

This could be accomplished from something like https://GHLURLHERE.com/?sub-account=subaccounthere&phonenumber=+15555555555&action=dialout

An example of this already working in another app is here: https://developers.dialpad.com/docs/app-launch-urls

This would work well on custom pages that link outside the custom app to allow for integration with the GHL dialer.