Every listing on Host Tools has a "booking window" you can adjust to set how far out you want your calendar to be open. You set this in your listing's settings. Your listing's settings can be reached from your main settings page, from the multi-calendar page, or from your pricing calendar page from that listing.
You can also block future dates with a "floating window of days" rule. By setting a floating window of days rule, for example, to 30-370, you won’t allow guests to book any further than 30 days out from the current day. This rule will automatically renew every day.
You can also use the "months" rule, instead of a floating period rule if, for instance, you want all weekends blocked over a certain period. At the bottom of the menu, you simply choose the days of the week you want to be affected. This is perfect if you use your lake house on weekends in the summer! Here is a screenshot showing how to create a rule to block all Friday and Saturday nights in June, July, and August.