Hi Brick33,
Depend on your proxy source, free or paid?
If it is free/ public source, then most likely it will not need any login and pass. So you may leave the "ProxyLogin" and "ProxyPass" as null (default, no edits necessary).
However if the proxy is paid for, then it depends on the type of authentication your proxy provider use. Commonly, there are 2 types of authentication used by most proxy providers:
1. Login and password authentication
2. IP-based authentication
So if your paid proxy is based on the (1) login and password authentication, then you will receive them from your proxy provider.
Whereas for IP-based authentication, the proxy authenticates/ verifies you by your IP. Therefore ONLY IPs that are white-listed are allowed to connect to the proxy.
Usually for this type of authentication, you will need to add/ whitelist your IP in the proxy control panel.
So for the filling part, if you are using free/ public ones, then:
"UseProxy": true,
"ProxyLogin": null,
"ProxyPass": null,
"ProxyUri": "192.168.1.1:8080"
"ProxyUri" is this format: "IP:PORT" <-- Note the semi-colon (

separating the IP and Port, and the opening and closing quotation mark (necessary!!).
In this case, replace 192.168.1.1 with your proxy IP and 8080 with the port.
If the proxy (paid) requires login and password authentication, then just fill the "ProxyLogin" and "ProxyPass" with the PROXY login credentials (given by your proxy provider).
"UseProxy": true,
"ProxyLogin": "username",
"ProxyPass": "password",
"ProxyUri": "192.168.1.1:8080"
Format above, note the opening and closing quotation mark!!
Else if IP-based authentication, then you just need to fill the "ProxyUri" information and connect to it with the white-listed IP.
Closing advice: I would highly suggest you look for some private paid proxy instead of public ones IF you are concern about your account (Well I mean if you're concern about your account, you won't even bot it in the first place).
Public ones, for example you and I will be using the same IP, and 2 bots botting from 1 IP will get us flagged and IP ban real fast!
Gl!