There are two ways to create a group.
The first is to access the slide out menu on the left by tapping the menu icon. Next to Browse Groups, there’s a “+New” button. Simply tap that and you will be taken to a group creation screen. Enter in all of your data, and select done.
You can also create a group from the Groups tab on your profile. Simply select the + and enter your data. If at any time you would like to modify your group, simply select the group, click on the group name and modify the desired fields.