Please help, don't really understand joomla + virtuemart. If we want to put a timer when user add to cart, so, and product will be unavailable for another user, can give a rough illustration how to do that?
So, if within that timeframe, user still no checking out, then the product will be removed from his cart, and become avail again.
Now it solved.
Just edit the code for virtual mart plugin and store the cart time in session. And use javascript module to pull from server whether any product expired, if does, then just remove it.