It would be great to see a Brave Talk feature to schedule a meeting in advance. It appears that Jitsi (the platform Brave Talk is built on) has a function to create a meeting in advance: “Jitsi moderated meetings is a feature that lets you book a meeting URL in advance where you are the only moderator.” It generates two URLs, one for the moderator and one for the guests. You just have to make sure you bookmark/save those URLs somewhere for the appointed time.
Edit: It looks like Jitsi allows calendar integration with Google or Microsoft and you can add a meeting URL to an appointment on your calendar. This would be a helpful feature to integrate into Brave Talk!