Yes, you could, or I could Email my working copy to you, or better still attach my program here. (See attached ZIP file). I set this test version to have 4-second timers so you will not have to wait so long.
First, are you sure that you have the Simulator in START mode? It is not a simple process to get it to that point. Then once started, it may not be obvious to you that it is running and that the timers are running.
Question: Have you run Picosoft simulations before this, enough so that you know how to get into simulation mode?
The copy that I just posted has the timers set to seconds, not hours, so you should see the outputs go on then off. Depending on how you have the P-buttons configured (Latching or Not Latching), the Pumps should go on then off.
If you have non-latching set, then only Pump 1 will run without holding your finger on the button.
PS: Procedure to switch from Circuit Diagram mode to Simulation Mode:
(1) Click these boxes on top menu in order: "View, Simulation, Display, Display & buttons". Make sure that the Pico front-panel simulation is showing on the bottom right of your screen.
(2) Click on "Simulation, Start".
(3) Now press one of the P-buttons (^ =P2, > =P3, V =P4, < =P1). Note that you can change the P-buttons from non-latching to latching by clicking the selector box on the Pico simulated front panel.