Paypal Intergration in my BA Forms

I tried to follow the description / documentation setting up a sandbox app but I faild beccause I cant find the last steps / Integration Payment on the paypal.developers site.

Could someone please help me with this integration?

There is no such modal window ... ?????
Open the Form Integration modal window: Integration ➝ Payment Processing ➝ PayPal.
2. Paste Client ID.
3. Enter Return URL.
4. Click the button Save.

Replies are visible only to logged in members with an active subscription.