After you login to your Convertkit/Kit account, go to the settings tab on the lefthand side (in their new setup - if you’re in the old admin it’s in the top right where your profile image is)

Next, click on ‘developer’

Scroll down to where you will see the V3 Key - copy that API Key

Login to your website and click on Breakdance (you will need Admin level access)

Next, click on settings under Breakdance

Click on API Keys

Paste your API Key for the Converkit/Kit section

On your forms, click on actions

Select ‘convertkit’

Click on the edit button for Convertkit on the form

Select the Kit form you’d like this website form to connect to (you need to have the form created in Kit first)