Is there a way to get an action to run based on whether a system is a laptop or desktop without building a script?

I am trying to add an action towards the end of the provisioning process (System configuration section) to install encryption on laptops but not desktops.  I know in MDT or SCCM you can use variable ISLAPTOP or ISDESKTOP =TRUE or FALSE to limit the systems that will run that action.  Is there a simple way in LD 9.6 SP2 without building any scripts etc.?