recording pause tab.

Recording reel to reel tapes to cd. Pause tab won’t pause the recording to change reels.
Any help appreciated.

You mean the Pause button, or the keyboard shortcut (“P”)?

Keyboard shortcuts are not global, so Audacity must have “focus” (the current front application) for shortcuts to work. Also, if you have any programs open that use global keyboard shortcuts, these will steal the keyboard away from Audacity.