Usage patterns
正規の手続きを踏むto follow the proper/official procedure
You need to go through the proper procedures to return to your country.
正規のルートで〈物〉を入手するto obtain something through official/legitimate channels
That ticket was obtained through official channels.
正規雇用で〈場所〉に就職するto get hired as a regular (full-time) employee at a place
He got hired as a regular full-time employee at that company.
正規の教育を受けるto receive a formal/regular education
She learned on her own without receiving a formal education.