How To Complete The Installation of Omnisphere In Logic Pro X

Hi,

I have just installed Omnisphere 2 into Logic Pro X, the instructions do not cover how to complete the final steps as detailed below:

9. Remove Omnisphere from your host sequencer.

10. Re-insert a new instance of Omnisphere into your host. Omnisphere will now be authorized and fully functional.

I'm new to Logic and this process so feel a little stupid. Could someone please advise how to complete these final steps?

Currently when Omnisphere is selected in Logic i have no sound at all, which is extremely frustrating having just spent 4-6hrs installing it.

Tanks in advance.