Ribbon Button Specs
Ribbon ButtonSpecs
Use ButtonSpec definitions when you need to add additional buttons to the left or right side of the ribbon tabs. Figure 1 shows an example of the ribbon with a ButtonSpec defined for the Near side with the text Spec1 and a ButtonSpec defined for the Far side called Spec2. You are not limited to just using text and can use any combination of text and Image properties. For a more detailed explanation of all the different ButtonSpec properties see this link.
Figure 1 - Ribbon with ButtonSpec instances
ButtonSpec Property
You can see in Figure 1 the ribbon property relating to ButtonSpec instances.
Figure 2 - ButtonSpec Property
ButtonSpecs
The ButtonSpecs property is a collection of individual ButtonSpec instances. To add, remove or modify the entries you should click the property and then use the presented ellipses button to open the standard collection editor. Note that some changes you make inside the collection editor will not update the ribbon control until you leave by using the OK button.