Appium with WDIO and Grid

Hey guys!

Currently I am using Appium with Webdriverio localy (passing Appium as a service in WDIO Config).
Can some one share an example of using Appium with Grid (especially WDIO config file)?

atm my config.services looks like this:
services: [ 'appium', { command: ['appium'], args: { relaxedSecurity: true, address: '127.0.0.1', log: join(process.cwd(), './logs/appium.log'), logLevel: 'info:info', localTimezone: true, debugLogSpacing: true, }, }, ],

This does use a global Appium service installed on my PC. So how do I configure this to work with Grid?

Thanks a lot!