Packing in Mesostructure template

Dear All,
For an atomistic simulation, a polymer with side chains is packed in an amorphous cell by ramping the density.Can we follow this procedure to pack a coarse-grained polymer chain in Mesostructure Template?
How can we do this?

I am not able to find the ramp density option in Mesostructure Builder.I would like to get some help on the steps that are  involved in packing a polymer with side chains in Mesostructure template.

Thanks,
Deepa