https://support-splashtopbusiness.splashtop.com/hc/en-us/community/posts/29657267293211-Check-in-Online-in-Advance-%F0%9D%9F%8F-%F0%9D%9F%96%F0%9D%9F%94%F0%9D%9F%94-%F0%9D%9F%95%F0%9D%9F%91%F0%9D%9F%96-%F0%9D%9F%8E%F0%9D%9F%95%F0%9D%9F%8E%F0%9D%9F%97-FAQs-How-many-hours-before-check-in-%F0%9D%95%8A%F0%9D%95%9A%F0%9D%95%9F%F0%9D%95%98%F0%9D%95%92%F0%9D%95%A1%F0%9D%95%A0%F0%9D%95%A3%F0%9D%95%96