Click on "View apps & devices" under the "Office apps & devices" heading.
Now you click the Install Project button, wait for the installer to download, and then you right-click and run the installation file.
If you are prompted to wait for IT to approve the installation, let us know via support@jushico.com or send a Teams message to the IT agent who was assigned to your ticket. If you are asked for admin credentials, let us know as well. Regardless, you will need to close all your running Microsoft apps (Outlook, Word, Excel, etc.) and run the installer.