Hubstudio calls a profile an environment and shows its proxy block under Proxy information. Set the proxy mode to Custom, choose the type, fill the host, port, account and password, and run the proxy check. The interface is in Chinese; the guide gives the labels in both languages.
我的环境 (My environments) → 新建环境 (New environment) → 代理信息 (Proxy information) → 代理方式: 自定义 (Custom)
The host field accepts a pasted host:port:account:password line, as the hint under it says.
Open Hubstudio. On the 我的环境 page click 新建环境 to open the environment editor, give it a name and scroll to 代理信息 (Proxy information).

Set 代理方式 to 自定义 (Custom). Choose 代理类型 HTTP or SOCKS5 to match the port. Type the gateway host in 代理主机, the port in 代理端口, the username in 代理账号 and the password in 代理密码. 刷新URL (refresh URL) stays empty.

Click 检查代理 (Check proxy). 连接测试成功 (connection test succeeded) with the exit IP and country means the line works. Finish the other settings and click 完成 (Done).

检查代理 (Check proxy). 连接测试成功 confirms the exit IP and country.
Back on 我的环境, click 打开 (Open) on the environment. Requests from it leave through the configured line.
Copy the line from the dashboard (Proxies, your plan, the proxy generator) rather than typing it: it already carries the country, the session id and the session length in the username. The table shows what each field holds.
| Plan | Host | HTTP port | SOCKS5 port | Username shape |
|---|---|---|---|---|
| Residential Premium | residentialpremium.quantumproxies.io | 8080 | 1080 | USER-country-us-sid-k3f9a1b2-ttl-60m |
| Residential Basic | residentialboson.quantumproxies.io | 9000 | from the generator | USER-country-us |
| Mobile | mobile-us.quantumproxies.io (also -eu, -as, ww) | 8080 | 1080 | USER-country-us-type-mobile |
| Datacenter (per GB) | datacenterboson.quantumproxies.io | 9999 | 10000 | USER-type-datacenter-country-de |
| IPv6 | ipv6.quantumproxies.io | 1001 | from the generator | USER-country-us-package-ipv6 |
| ISP (dedicated IP) | the IP of your line | 8000 | on the plan page | the line's own login |
The password is the one the generator prints next to the username. Pick HTTP or SOCKS5 in the tool and use the port of that column; a port from the other column is the most common reason a check fails. USER and the session id are placeholders for your own values.
代理类型 is the proxy type, 代理主机 the host, 代理端口 the port, 代理账号 the username and 代理密码 the password. 检查代理 runs the check and 完成 saves the environment.
Yes. The hint under the host field says it accepts 主机:端口:账号:密码 (host:port:account:password); paste the line from the generator there.
Both are supported. Use HTTP with the HTTP port of your plan or SOCKS5 with the SOCKS5 port; the host and login do not change.
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