Autotrading question--rescaling account

Before I start autotrading, I’d like to know–How easy is it to rescale the size of the account I am autotrading? Let’s say I sign up to autotrade a system with 20K at OptionsXpress. I know that C2 can “scale” the system to the initial size of my account, but can it be rescaled later? If I later want to reduce the size of my account (if I need to pull out cash), or add new cash to the autotraded account, is that easily done? Thanks for your response.

Yes but with futures systems you obviously cannot go below 1 contract which in same systems need 100K to be safely scaled.