I’ve trying to effects in my piece - but some presets are in the drop down box - i.e. graphic eq - I wanted to set to a rock eq but is wasn’t there. I trying other effects and some them work, others don’t. Can anyone help? 
As with several of your other posts, you have not provided nearly enough information about the problem to allow us to even start helping you. We cannot see your machine. Please give a detailed, step by step account of what you are doing and what problem you encounter, then we will probably be able to help you.
For instructions about using the Equalization effect, see here: http://manual.audacityteam.org/man/Equalization
I am trying to use Audacity - in the effects drop box - there is no rock setting in the graphic eq tab.
You have to experiment with what sounds good to you. Most rock EQ curves leave the middle frequencies and the very bottom frequencies alone (zero gain), and increase all the other frequencies.
If you want to get some ideas, try clicking this link:
Rock eq settings - Google Zoeken .
Gale