You integrate itslearning with your H5P environment if you are using the hosted version of H5P (https://h5p.com/). For self hosted H5P environment integration via LTI is not available.
You will need to have access to itslearning as administrator and to the H5P environment you want to integrate with.
In itslearning, go to:
You now need to fill in the configuration from your H5P environment. To get these, log in to this environment as administrator.
Now you need to copy values from itslearning into the H5P environment.
Lastly, in itslearning check the box The tool provider has registered these fields and click Save.
The first time the H5P app is used, you will need to fill in a verification code. So to finalize the setup, go to a course and under Resources click Add. The H5P app should be on the Add page. If not (when it is not made available by default), click the … button in the top right and choose Browse app library first.