Start by going to Audience > Groups and Adding a New Group.

Once in the group hit Add rule. This will bring up the Rule pop-up box.

You may want to set up the following rule. Then click add. Your first rule will now appear in the rules section

Now repeat the add rule process to add a second, third, fourth or even fifth rule. A rule can be changed at any time by pressing the pencil shown in the left.

Finally once all the rules have been added make sure your operators or conditions have been set up correctly. Using 'and' will ensure that both criteria need to be matched for a contact to be included in the group. Using 'or' will mean that a contact simply need to match one of the criteria to be included.