https://support.coros.com/hc/en-us/community/posts/30813185778964-%F0%9D%93%94%F0%9D%94%81%F0%9D%93%B9%F0%9D%93%AE%F0%9D%93%AD%F0%9D%93%B2%F0%9D%93%AA-Dial-%F0%9D%9F%A3-%F0%9D%9F%AA%F0%9D%9F%A7%F0%9D%9F%A7-%F0%9D%9F%AA%F0%9D%9F%A5%F0%9D%9F%AA-%F0%9D%9F%A6%F0%9D%9F%A9%F0%9D%9F%A2%F0%9D%9F%A3-Upgrade-Can-you-upgrade-seats-through-%F0%9D%94%BC%F0%9D%95%A9%F0%9D%95%A1%F0%9D%95%96%F0%9D%95%95%F0%9D%95%9A%F0%9D%95%92-Options