Changing paths of the template

Please do never change templates directly in the resources folder of the extensions, since your changes will get overwritten by extension updates.

Configure your TypoScript setup like shown below:

plugin.tx_calendarize {
  view {
    templateRootPaths {
      150 = your/new/path/
    }
    partialRootPaths {
      150 = your/new/path/
    }
    layoutRootPaths {
      150 = your/new/path/
    }
  }
}

Doing so, you can just override single files from the original templates. The calendarize templates are always the fallback (position 50). Alternatively you can change the constants:

plugin.tx_calendarize.view.templateRootPath
plugin.tx_calendarize.view.partialRootPath
plugin.tx_calendarize.view.layoutRootPath

Theses constants are used at position 100 in the TS setup of the calendarize extension.