It's easy to organize your presentations into different folders in Mentimeter. 

To create a folder, select the '+New folder' button in your My presentations folder. 

This will prompt you to give your folder a name. Once you have given your folder a name, select 'Create folder'.

You have now created a new folder. It will appear in your dashboard.

It is possible to create new presentations from inside your folders, by simply selecting '+ New Menti' when you are inside the folder, as shown in the image below:

If you would like to move presentations to a folder or between folders, click on the three dots next to the presentation, then select the Move to option:

You will then be able to select which folder you would like to move your presentation to from the pop-up menu. 

It is also easy to move several presentations into a folder at once. When you hover over your presentation in the dashboard, a checkbox will appear, as shown in the image below. You can now select as many presentations as you need to move and then click on 'Move to folder' in the bottom-right corner and select which folder you wish to move them to in the pop-up window.