Rootless custom scheduling of Time Machine backups It has been asked how to customize the backup schedule of Time Machine, but the solutions in the answers only seem to work in releases of OS X that weren’t “rootless”, i.e. before 10.11 El Capitan (or was it 10.10 already?). The recommended tool Time Machine Scheduler also doesn’t seem to have been updated since 2013.

Is there a solution to adjust the backup intervals for current (2015+) versions of OS X?
You can use any of the existing solutions from the existing question Custom Scheduling of Time Machine backups by disabling System Integrity Protection first using csrutil disable in Terminal from the Recovery HD. Once the changes have been made, you can re-enable SIP by running the same command but using ‘enable’ in the place of ‘disable’, also from Terminal in the Recovery HD.