Hi, welcome to the forum!
Two things I see in the first image:
The second image tells me that you need to click the "Browse" button at the top to be able to see what you have going in Kontakt Player. The VDL part should look similar to the attached image. Installing a sound set.
Two things I see in the first image:
- It's recommended that Mac people use the AU version of the Kontakt Player plugin within Sibelius. You can ignore all the ones that read "VST".
- The "VDL SoundSet 7.0a" sound set is the one you'll need to choose. If you don't have that in the drop down list, then you've either not installed it, or you put it in the wrong place.
The second image tells me that you need to click the "Browse" button at the top to be able to see what you have going in Kontakt Player. The VDL part should look similar to the attached image. Installing a sound set.