Find a python script that does what you want and add a hotkey for it to the scripts menu.
- Put the script in the scriptsmenu folder in the Poser folder (e.g. C:SomewherePoser 8RuntimePythonposerScriptsScriptsMenu)
- Change the filename of the Script: Add ### followed by the combination of SHIFT+ALT+CTRL+Character you want to use (eg. change "myscript.py" to "myscript###Shift+A.py" to run the script by pressing SHIFT+A in Poser (that is, if that shortcut is not already used)
- (re)start Poser