A while back I recommended this handy power supply module to MrDEB. I came across a very concise one page operating guide which may be handy if you have one of these. These modules are available in many specifications (for power supplies) and many different functions. They all operate in a similar but different way, so this guide may save some frustration. It's attached as a pdf.
Those modules are really pretty slick as to bang for the buck. Available from Amazon and other distributors. Thanks for posting the link to the manual.
I have a bunch of different-function modules in this form factor and unfortunately they all put their own spin on the user interface. A concise page of instructions can be handy.