You can install ClaroRead Word once your Office 365 admin has deployed it.
To install ClaroRead Word, complete the following steps:
- Under to Insert tab in Word, select Add-ins (choose My Add-ins if available).
- On the Office add-ins pop-up window, navigate to the Admin Managed tab.
- Select ClaroRead Word by clicking on the ClaroRead Word icon, and then click Add.
For more help view this Microsoft article: View, manage, and install add-ins guide.