When editing mind maps, the most commonly used features are the topic related features. For example, add topic, set the topic text format, the link line shapes and colors, topic shape. All of these common features are collected in this context menu, so you do not need to find them out from the ribbon menu items.
To pop up right menu, you just move the mouse over a topic, right-click on it. As shown in the following:
In the picture above, there are some buttons in the top row: topic font family, font size, link line style, link line color, title shape button; in the second row : font bold, italic, font color, topic background, text align left, center, right, and the last button is image alignment. Then the following menu items are self-explanatory, please refer to the description of the edit and format features.