It is not possible to set a period of rolling weeks above 10 weeks.
You could at least increase it for six months.
Beside that, there is not a default mode to set it to the maximun roling weeks. So everytime we set a new calendar we need to remember to change that.
Hi!
Thank you for your feedback! My name is Melissa and I am the Product Manager for HubSpot’s Meetings tool. We now have a Beta that will allow you to schedule a meeting up to 60 weeks in advance. For those that wish to join the Beta, you can request access for your portal here. This is currently in a private beta, but we plan to roll it out to all portals shortly.
Melissa