"create mass transfer" button at MWBMON

On transaction MWBMON, there is a btton called "create mass transfer".

-- what does this button do?

-- I believe this button will only display sme data , so it will not have any impact to the running package , right?

-- there is a parameter called " access plan identification" for this button, what is its meaning in the context of packages?

Thanks for your help.