We are working with team in Europe and United States, we both have different systems, plus some furniture/ have inches in specs, some in cm... its just time consuming to go to menu & select dimensions (3-4clicks) and during the day this all quite consume time. is there option to have toggle for this? One click and done? can't be so hard?
Are you talking about the display of dimensions in the Tracker Working Units or the Dimension Tool?
If it's the Tracker, you would have to the Working Units through Options>Project Preferences>Working Units. You could however add a keyboard shortcut or toolbar button directly to that setting for ease of access.
If its the display of dimensions on the Dimension Tool, you can create a presets for Metric and Imperial and the quickly swap between them from the Quick Options palette along the bottom of the screen.