@Landokirk any module you dont need, just add
disabled:true,
after the
module:
line
for the google calendar, use the desktop to go to calendar.google.com
hover the mouse pointer over the calendar name in the left nav
3 dots will appear to the right, click and pick settings
scroll down to sharing, and locate the ical
url, or secret
that is the string used in the default calendar url: setting
then for EXT3 you install that module
if you use my MMM-Config module, it will provide a form based approach to system and module configuration, and also supports module install.