To Create a New Panel

Do one of the following:

Select File > Settings > User > Customize Ribbon .

or
Right-click in the blank space in the ribbon and select Customize Ribbon from the pop-up menu.

The Customize Ribbon dialog opens.
In the list below Customize the Ribbon, navigate to the group in which you want to create a custom panel.
Click New Panel.

A new panel is added in the selected group.
(Optional) Do one of the following:

Click Rename and rename the new group.

or
Rename the new group in the Label field in the Properties section.
(Optional) In the Properties section, from the Visibility drop-down list, select the visibility expression.
Note: The Visibility property holds the name of a named expression that will be evaluated each time the active model is changed to determine whether the item should be displayed. The named expression should return a boolean (True or False) result in order to work properly as a Visibility property.
(Optional) Set other properties, as desired.
Click Apply.