I have to lift a platform to three fixed heights, how can I do ?

The customer needs to lift a platform to three specific positions in order to load and unload dies from a rack. 

We offered NEWBINGO100.2, with platform complete with outer nylon rollers with programmed elevation in 3 positions, fork elevation and descent by means of a mobile pushbutton panel with three buttons. More powerful, continuous-use motor and TC1 modular battery charger. (Ref.14_1297/TR03)