Hello, and thanks for using the Forum!
I believe what you’re simulating is a steady-state solution, and the “end time” in a steady-state simulation corresponds to number of iterations. In a steady-state solution, an equilibrium state is assumed and computed independent of the time, hence it’s not possible to create time-dependent animations, etc.
You would need to switch to a transient solver, where you can simulate the time-dependent effects. Please note that the transient simulations can be expensive in terms of time and computational resources.
I hope these are helpful,
Kaan