You can create an entity by the following method.
Step to create an entity
1. Select the Professional tab.
2. Select the desired icon of desired ribbon to create an entity. (For example, select the Body ribbon or the Joint ribbon or the Force ribbon or etc.)
3. Set a creation method (For example, select Point, Point) in Command Toolbar to create the entity
4. Click the desired position at the grid of Working Window as the creation method.