Manual how to create a diagram: This manual assumes you have logged into simplified.
In the top right corner select your repository. (In this example the repository is called Demonstration, but your might be called different like My Repo 1)
In the bottom left the repository view will now be populated with Models. (Your models might differ)
By right-clicking on a model, you will see a context menu with the option to create a folder.
Click this open. This will open a new popup where you can input the Folder name.
Once you have filled out the folder name click on submit. Next, right click on your newly created folder. This will again open a context menu.
In this context menu you will see multiple options. Hover over the Create New option. This will open a sub context menu to the side. Here you can click Create New Diagram.
You will now be shown another popup.
In this popup you will have to input the Diagram Name, select the notation where your diagram type is and then select the Diagram Type you want from the dropdown menu. Once done, select submit. Your new diagram is now created in the folder. You might have to open the folder first by clicking the arrow on the left side.