Discovery campaign is a great way to find keywords, that you didn't find before. The main rule about Discovery campaigns - you should add your SKAG keywords as campaign negatives for the specific Discovery campaign, so there will be no overlapping between SKAG and Discovery.
During the creation of your SKAG campaign, you will be able to turn on the "Add these keywords as campaign negative for Discovery" switcher. There are 2 options: you can add your SKAG keywords to an already existing Discovery campaign, or you can create a brand new campaign. Lets focus on the second option.
If you will click on "Create new campaign", campaign creation popup will appear.
All you need to do is to fill all the fields (except CPA Goal, its optional) and Asapty will create a Discovery campaign will all these settings. Keywords from SKAG will be automatically added as Negative Keywords.
You can also create Discovery campaign during the last step of Keyword Suggester campaign creation with the same process and result.