The answer to this question is yes and no, which might seem confusing, so let me explain. Cal.com is a calendar scheduling product. This means that for an event to exist, it has to be tied to a specific day and time.
We don't have a function at the moment that lets you just automatically enter a meeting room by clicking on a single link. However, every Cal.com user has a profile link in addition to individual event links. Your profile link is Cal.com/your username.
Sharing this link means that someone can book a meeting with you anytime based on your availability. In this way, your profile link acts as a meeting link that's not tied to a specific date and time. However, no meetings can be generated without the other party committing to a specific date and time.