The button pins or unpins the main toolbar to the screen
Advanced Settings
Choosing this option you will see this window that let you setup the environment according to your needs. Detailed description of the options can be found here
TeamViewer Session
Launches a TeamViewer client session for remote on-line support. For more details check the following link
License Settings
This command accesses the Bly 3D Activation window. Detailed description of the options can be found here