This article explains how to access OnePlan.
Go to https://my.oneplan.ai
Your access to OnePlan is tied to your Office365 account. Log in with your Office365 user name and password.
The first time you log into OnePlan, you are directed to the Getting Started "Welcome to OnePlan" page. This page includes an intro video to get you familiar with OnePlan.
Going forward, OnePlan will remember your last screen and open there each time you log in. To return to the Getting Started page at anytime,
Click on the Help Menu (?).
Select Getting Started.