If you need support from Yola please contact us via firstname.lastname@example.org or make use of our live chat service! We are working on a new approach to community-based support and during this transition period we are not adding any new threads to this forum. Many thanks to everyone who has participated over the years and we look forward to unveiling a new peer-to-peer support system soon!
You are describing an interactive calendar which would require that it be hosted somewhere else and brought onto your Yola website. Yola doesn't have accessibility for people to access the site through the published site, only through the website builder.
There are a number of providers that supply interactive calendars but most are not free subscriptions.
Another option is to use something like Google Apps calendar and allow users access to your calendar for updates and so on.