How to Set Keep-Alive Timeout in VertrigaServ?

In the apache configuration file httpd.config, there is no Keep-Alive setting and in the VertrigaServ configuration file, too. I don’t know where to find him. The is Response Headers:

Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Connection: Keep-Alive
Content-Type: text/html; charset=UTF-8
Date: Tue, 26 Nov 2019 13:27:47 GMT
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Keep-Alive: timeout=5, max=100
Pragma: no-cache
Server: Apache/2.4.20 (Win64) OpenSSL/1.0.2g PHP/5.6.20
Transfer-Encoding: chunked
X-Powered-By: PHP/5.6.20