Saving shared plans/ units
I would like to be able to 'claim' or 'appropriate' a lesson or unit plan on which another teacher and I have been collaborating. Currently, because the other teacher started it and invited me, I cannot save the lesson plans or even make a unit with the information we have been sharing in the 'plans' section.'

Good news, we have added Lesson Linking to Planbook! Rather than copying lessons from a lesson bank or between classes, you can now create a LINK to the source lesson. This means that any changes you make will automatically show in ALL places where the lesson in linked! To learn more, visit our knowledge base at https://planbook.uservoice.com/knowledgebase/articles/1947022-the-copy-screen
Lesson Linking, when combined with Lesson Banks, provides teachers and schools with a powerful curriculum management tool. Teachers can collaborate on the development of curriculum (classes, units, lessons), store the curriculum in lesson banks, and set permissions for who can view or edit the banks.
Teachers can then either COPY or LINK the lesson banks into their plans. COPY will allow teachers to create a new set of lessons that are solely for their individual use. LINK will establish a link to the source lesson, such that any changes made will automatically show in both the source and the target lessons of the link.