In Zoho People, you need to be invited by the system admin into your organization before you can proceed to be a user in your particular organization.
Once the system admin invites you to the organization, you will receive an email. In the email, it will contain a link for you to confirm. Refer picture below:
You will see an email like this. Just click "Please click here" and you will be directed to the login page. Please be informed that after you clicked the link, and it asks you to put your NAME and PASSWORD.
After filling your name and password, please proceed to click "Create Account" button.
After finishing this process, you will then be a user inside your organization.
You will then see button for "Access Zoho People". Click on it and you will go to Zoho People home page.
Once you are in the home page you click proceed to click on the display picture of your account near the notification icon(right top corner). You would find your organization of which you are associated. Refer picture below:
There you see the name of your organization that you are in to. If there is any problem, please contact your admin for further help.