All numbers in the table should be editable by the user -- apart from the fatality percentages which are computed from the values given. We've been working on the design to make this more obvious at a glance.
No worries. I think it's also important to note that the Imperial College study that's gotten a lot of attention recently is an agent-based model - i.e. they simulate actual individuals - which allow them to look at specific quarantine measures like school closures. You can accomplish an approximate version of this with our model by controlling the isolation column of this table. This allows one to selectively quarantine age groups quantitatively.