We require admin access to create your WhatsApp Business API setup. Without this, we will not be able to do it on your behalf.
If you want to do this your self then follow these steps of setup.
1. Go to your Facebook Business settings from this link: https://business.facebook.com/settings/people
2. Click on the Add button, You will see this dialog,
Now enter our email id “email@example.com” and click Next.
3. You will get this dialog, Grant the Manage access and click next
4. You will see this dialog. No need to select anything, Just click on Invite.
5. Thank. You have been given access. Please submit this page screenshot and click submit.
Refer -our blogs - blog.whatstool.business