Currently the activation and display of certain model view orienation can be initated via:
(1) Right Mouse Button (RMB) on the screen area, click "Orient View"
OR
(2) Using Part Navigator panel and expand Model View node
Question: Is there a way to have the above methods configured on the toolbar area?
Solution(1) Go to "Menu > Tools > Customize..." to bring up the Customize dialog.
(2) In the Commands tab, under the Categories area, find and highlight "All Dropdowns" (no need to expand this option).
(3) On the right-hand side in the Items area, locate "Orient View Drop-down" and drag it out to drop it in the desired area on the ribbon.