Foreman enable puppet

Problem:
hello. Please tell me how to embed puppet server in foreman 3.4? Now there are not even environment settings in the menu. Maybe there is some instruction on this?
Expected outcome:
puppet worked

Foreman and Proxy versions:
3.4
Foreman and Proxy plugin versions:
3.4
Distribution and version:

Other relevant data:

See Configuring Hosts Using Puppet

thanks