org-replace-disputed-keys

org-replace-disputed-keys is a variable defined in `org.el'.
Its value is

nil

Documentation:
Non-nil means use alternative key bindings for some keys.
Org-mode uses S- keys for changing timestamps and priorities.
These keys are also used by other packages like shift-selection-mode'
(built into Emacs 23), `CUA-mode' or `windmove.el'.
If you want to use Org-mode together with one of these other modes,
or more generally if you would like to move some Org-mode commands to
other keys, set this variable and configure the keys with the variable
`org-disputed-keys'.

This option is only relevant at load-time of Org-mode, and must be set
*before* org.el is loaded. Changing it requires a restart of Emacs to
become effective.

You can customize this variable.