A method of accumulating packages and an accumulation module including a base cabinet, a rotatable accumulation dial, a hopper and picker assembly, the picker assembly extendable radially outward from a home position to a position outside of the hopper to retrieve a package and place the package on the accumulation module. The package is acted on by a first plunger from above and a stabilizing plunger from below to hold the package in place and then the package is treated by a heat stake anvil from below.