Hi Sigmamax,
So you can follow these steps :
Step 1 : navigate to make.powerappas.com > Apps > Select your app and click Edit
Step 2 : Click on Add a new page and select Dataverse Table as shown in the figure below
Step 3 : Search the Opportunity product Table and Select it as shown in the figure below
Step 4 : If your opportunity Product entity is added, Just click on Save and then publish
Now, if you want create a custom view, Just navigate to make.powerapps.com>Dataverse> Select your table "OpportunityProduct> Views
And create your custom view using the filters that you want.
Hope that's helpful for you.
Please mark the answer as verified if that's helpful for you
