When you first setup your Pigeonhole, you're asked to specify the start and end dates of when your event will take place. This becomes the date range that you can set sessions to be live (you can change your Pigeonhole Duration anytime).
All per-event Pigeonhole Plans have a maximum duration of 1 week (7 days). This duration is regarded as a single continuous block, so you can't combine dates from different time periods. When adding sessions, the session start and end dates/times must all fit within your plan duration.
If the plan duration is insufficient, you can [purchase additional day add-ons] to extend it. For example, if you purchase two additional day add-ons, your Pigeonhole will have a combined total of 9 (consecutive) days duration.
Determining the duration needed for your event
Take for example an event that starts on 11 June and ends on 14 June:
Counting the number of days from 11 June to 14 June, that's a total of 4 days. Based on this, you will need a plan that supports a duration of 4 days. Since all Pigeonhole Plans come with a week's duration, any of the plans will fit your requirements here.
If you also intend to have pre-event or post-event engagement activities using Pigeonhole Live, you will then need to add the number of days before and/or after the event to your event duration. Based on this example, if I wish to conduct a poll 3 days before, and also continue collecting feedback responses 3 days after the event, I'll need a combined plan duration of 10 days (3 + 4 + 3). If my Pigeonhole Plan has a week duration, this means I'll need to purchase 3 additional day add-ons.
If the pre/post-event engagement activities are subject to changes, don't worry. You can purchase more add-ons even after you've purchased your Pigeonhole. Upon purchasing online, the additional days are added onto your plan duration immediately.
Test Mode — When Pigeonhole Plan duration does not matter
Test Mode works anytime before your first session in your Pigeonhole starts. That means if you intend to do a tech run, or brief the speakers and moderators, with Pigeonhole Live, you don't need to factor those dates and purchase additional day add-ons for that. Going by the example above, if the first session starts on 11 June, anytime before 11 June, you'll still be able to activate Test Mode and do your tech run or briefings. There's no cost for all that!
If you have completed setting up your agenda on Pigeonhole, and you have Test Mode deactivated, you can start sharing the event agenda on Pigeonhole Live to all your attendees. This can be any amount of time ahead of your Pigeonhole's first session starting date/time. Again, this has no bearings on your Pigeonhole plan duration.