Making a complaint is quite a simple procedure.

申诉的手续相当简单。

《牛津词典》

If you want to make a complaint, you'd better follow the correct procedure.

如果你要投诉，最好遵循正确的程序。

youdao

We have internal staff grievance procedure and MD email box, if a staff who has any complaint or got unfair treatment should follow company procedure and raise issue by right channel.

我们有内部员工委屈申诉程序和总裁信箱，如果员工有任何委屈或得到不公平待遇应遵照公司流程通过正确的渠道提出问题。

youdao

The plot thickened yet further with the information from NBC that Twitter had informed them of the presence of this tweet and the complaint procedure.

FORBES: More Twitter Olympics: Journalist Banned, Harasser Arrested

Ms. HILLMAN: Right, well there is every voter during a Federal election has an administrative complaint procedure that they can take advantage of, and that is filing a formal complaint with the election official and there's a process that they are entitled to.

NPR: Can Your Clothes Keep You From Voting On Election Day?