How to infer "Intercom('update') without getting throttled up to 20 times per 30 minutes?" if its per user, per same user or per workspace basis?

Hi there,

Can someone help me understand how to infer "Intercom('update') without getting throttled up to 20 times per 30 minutes"?

Is intercom saying that Intercom('update') will start throttled:

1. 20 times per 30 minutes per user?
2. 20 times per 30 minutes per workspace?
3. 20 times per 30 minutes per same user?

How to decide if its per user, per same user or per workspace basis?

Article Link: https://developers.intercom.com/installing-intercom/docs/intercom-javascript

method name: Intercom('update')

Thanks in advance.