umidjons

Record Auto semicolon macro and bind shortcut to it:
1. Edit -> Macros -> Start Macro Recording
2. In the editor go to the end of line by pressing End
3. put semicolon ';'
4. Edit -> Macros -> Stop Macro Recording
5. Give a name, for example 'Auto semicolon'
6. Open settings (Ctrl + Alt + s), select Keymap
7. Expand Macros node
8. Select 'Auto semicolon', in the context menu choose Add Keyboard Shortcut
9. Set Ctrl + ; as First keystroke

andreyvit

tmux cheat sheet

(C-x means ctrl+x, M-x means alt+x)

Prefix key

The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf:

remap prefix to Control + a