In the editor click the Audience icon to bring up Audience settings in a popup.
Add a statement by clicking Add.
Add one or more statements that need to be fulfilled by the visitor for him/her to be exposed to the experiment. This also decides when your experiment should run (E.g. when and on what page(s) your variation changes should be executed)
Notice that the first If block is set to Match all of. This means that all statements added in this will have to evaluate to TRUE for the visitor to be exposed to the experiment.
You can change this to Match one of if you only wish one of the added statements to be TRUE for the visitor to be exposed to the experiment.
You can also build a more advanced Audience by adding more If blocks. Most experiments however will only need one or two of these to target the intended Audience.
When you are satisfied with your Audience click Save in the top right and then close Audience settings by clicking the x.
When you have set up your Audience it is important to test the Audience to make sure that the Audience is only TRUE where you want it to be true. Otherwise, your experiment may cause problems with other parts of your website.
Check these Audience examples for inspiration on how to set up your Audience.
Note: Remember to set the correct Audience mode for your website, otherwise your Audience might not evaluate when it should which can cause the experiment to not function the way you want.