How do I disable secure boot?

How to disable secure boot in manjaro as it is cancelling my installation of other os and saying security boot violation.

Secure Boot is something your UEFI/Bios does, so you have to disable it there.

It has nothing to do with Manjaro.

But it is not allowing me to do so. Everytime it’s saying violation of secure boot and the option of secure boot is not clickable. So how to disable it ?

Refer to your motherboard manufacturers instructions.