Hello, can somebody help with advise regarding API key usage.

Lets say I have an initial point:
a) there are 2 zoho(crm) accounts -  account1 and account2
b) I have developer API key for account1
c) I don't have developer API key for account2
d) account1 and account2 belong to different organizations (means there is no any relations between these accounts)

My task is to make several Zoho CRM API calls to fetch data from account1 and account2.

Question1: as per Zoho CRM API implementation, is it possible to perform my task without having developer API key for account2 ?

Question2: pls comment on the statement "I need two different API keys if I'm using multiple products -- one for the CRM and one for other products (Creator, Writer, Sheet, Show, Viewer, Planner, Reports, Meeting, Invoice)". Is it true ?

thanks.
Alex