iMac running Tahoe cannot copy and paste with mouse

yankeyborn wrote:

Brand new iMac running Tahoe will not copy and paste using mouse.

What Brand of Mouse is being used on the Brand New iMac ?

A Brand New iMac comes with >>

• Magic Keyboard with Touch ID
• Magic Mouse
• Configurable with:
• Magic Keyboard with Touch ID and Numeric Keypad
• Magic Trackpad

In which case >>

Enable Secondary click (that is, right-click): Press the left or right side of the mouse to perform a “secondary click.” (To enable right- and left-click, in System Settings, click Mouse, then select “Secondary click.”) Or press the Control key on the keyboard as you click the mouse.

Having done all that >> Rifgt Click or Secondary Click should present a Sub Menu

refer below