Can one Zoho user account be a member of more than one CRM accounts?

Can one Zoho user account be a member of more than one CRM accounts?

Hi,

I would like to support a business in setting up a Zoho CRM account, but would need to be switched on as an administrator in their account to provide my services.

However I am also using Zoho CRM for my own purposes.

Do I need to create a separate Zoho Account for each CRM instance, or can reuse my existing Zoho user account?

Cheers,
Carsten.