regarding f4 help in gui screen

hai to sdn members,

ihave to desin ascreen such thatone of the fields in screen first field should have f4 help so that i can choose a value and i have to create save and dispalay and change options in menu bar and i have to create save and exit buttons in standard tool bar so when after selecting a value by f4 i should save the other fielsds and change is to update and display to insert and exit to leave the screen

thanks

elias