If I invite an outside user to a calendar event what type of access to calendar will they have?

If I invite an outside user to a calendar event what type of access to calendar will they have?

"m brand new to Zoho and I'm creating a meeting with a potential client.  I want to invite them to the meeting using Zoho, but unsure of what they will be able to view or have access to once I do this.  I only want them to access to the single event.