Question on decreasing a level in just one section

I’m using Windows 10 and version 2.0.3 of Audacity

I’m making a backing track of a song that the first section of the song is to loud. I know there’s a way to squash the section to reduce the level but for the life of me I can’t remember how to do this. Can anyone out there help me? Thanks in advance, Roger :blush:

Audacity’s envelope tool

By the way, it’s a really bad idea to post your email address on public forums as spambots regularly search forums to “harvest” email addresses,
I’ve removed the email address from your post to prevent that from happening.