Upgrade to 6.3 and 2024 Planner

Hi there,
just ran an upgrade to penbook 6.3 on my iPad. Immediately liked and downloaded the 2024 planner which I felt was very useful. Opening it I found that after the year overview page, the planner starts with August 2024! I apparently can add more pages etc. but I could not figure out how to add the preconfigured missing months Jan - July. Can you help?
Many thanks!