Ususally, users come to Rosetta with an idea of the biological problem they want to solve. Sometimes, users come with an input structure and the notion that they want to perform a particular type of sampling, whether via running an application or using a RosettaScripts mover. Here, we have categorized Rosetta's RosettaScripts-enabled movers by the type of structural perturbation they perform, but the biological problems page will better serve you for application use. If neither page helps, perhaps you haven't determined what the problem is?