The managed configuration of Chrome is a bit buggy at the moment on the Proxy topic, this is why we suggest you follow this tutorial instead. After you logged in to your TinyMDM account:
1. From your dashboard, go to Policies tab and click on 
.
2. In Apps management section, find Chrome and go to its managed configuration (三 icon, then Configuration).
3. Find the Proxy settings field and copy and paste a Json into it to override individual (and buggy) Chrome settings. Below are two examples to paste (one or the other):
{
“ProxyMode”: “pac_script”,
“ProxyPacUrl”: “https://example/proxy.pac”,
}
or
{
“ProxyMode”: “fixed_servers”,
“ProxyServer”: “xxx.example.com:5000”,
“ProxyBypassList”: “https://www.example1.com,https://www.example2.com”,
}
