Hi everyone,I faced the same issue and found a solution to it. It is not the prettiest one but worked for me and I hope it helps someone not to waste a couple of hours on that :). If projected to the micsinco's (original question author) problem, it probably should look like the following:nYou leave your pretension as you have (the pretension is defined by a parameter set, applied at the first time step, and locked during time step 2). Then, if you want to define another force through a parameter set and apply it at a different time step, you first select it to be a parameter like you would do normally, and then, in the Tabular data, you right-click and Activate/Deactivate at this step the steps you want the force not to be applied at.nnn