In order to create campaign in Instagram the first thing you need to do is set up your Instagram account in Business Manager. This can be done in a few simple steps.
1. Go to you Business Manager account.
2. Click on 'Business Settings' in the left hand panel.
3. Navigate to the 'Instagram Accounts' tab and click on the button labelled 'Claim New Instagram Account'
4. Once you have your instagram account setup in your business manager you then need to link this with your Facebook ads account.