The module is in the marketplace. Please do check your VPN or any spelling errors.
I see that you are looking for Marketplace Content from your Company (Jabil). So if you are creating an app from scratch make sure to use the following Company starting point: https://new.mendix.com/link/overview/
This template will include all the necesary modules that are listed in the Wiki documentation that you are looking into. And lastly, for the Okta Integration that is included, make sure to look into the contents of the “Jabil_Okta_Custom” Module.
if you don’t want to create an app from scratch (you have an existing app), you can manually add the required modules, by consulting your Company’s Marketplace Content here: https://marketplace.mendix.com/link/company/content
If you have any more questions please feel free to reach out to me and I’ll gladly help