My stacks not work

Hello everybody
i have buyed a rapidweaver 6 copy 2 days ago;
I can 't see (at the beginning of every project )under the column + the stacks option ( I have two purchased it in the program ) . Why it does not appear ?
thank you

Do you have the Stacks plugin by Yourhead?

Did you already try to hover with the mouse over “All Plugins”? You should then see it in the list of all available page types…

guys thank you all, i have understand the problem and i have solved. Infact
I haven’t download the stacks3 plugin for the program; now is all ok
thank you all again