You need to have a custom user variable for each of the destinations your user will jump to from the home page. Call the variable something that clearly indicates what it is tracking. (E.g. Sim_01, Sim_02, etc). Set the Default value of each variable to 0.
When the user clicks your home page button and jumps to the destination page, set the ON Slide Enter action to Assign the relevant tracking variable to 1, this indicates the user has visited that destination.
One the home page, you need to have a Conditional Advanced Action that gets executed by the On Slide Enter event of the Home page. It should have several Decision Blocks in this Advanced Action, each of which checks the value of the tracking variables and if they are set to 1 they will SHOW the relevant image button, ELSE the action HIDEs the same image button. So if the user has just visited Simulation 1 and the Sim_01 variable is now set to 1, then your Conditional Action should SHOW the second image button, etc.
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