How to Security Officer 202?

[The Grim Sleeper]

I am learning a lot from this thread, mostly about being robust outside of combat and that a lot of people feel ok about the Cops cracking down hard on suspicious characters.

But here are 2 cases that I run into frequently that leave me almost paralysed with 'incompetence':
1) Seemingly normal people engaging in minor crimes that could have far reaching consequences, like stealing EVA gear from public area's or hacking a vendor, having a fight etc.
2) Obviously (and possibly illegally) 'enhanced' people not doing anything super bad but engaging in minor vices that should be punished, but can't be handled by one beat-cop unassisted; Like fully decked out miners or transhuman geneticists looting the by then quite-derelict station.

Mostly things where I feel the right preventative action could save the station (or at least make Sec not seem completely incompetent till the shuttle arrives) in the long run, but would also be unwarranted police brutality in a very direct and immediate sense.
2 people fighting could be just 2 infantile morons who aren't even worth the trouble, but it could also be a traitor silencing a key witness, and your hesitation to pick 'who gets brigged first' the last mistake you ever make.
And then applying all that robust-ness and communication without fucking up. Do you tase them first, call backup and then apply cuffs, or apply cuffs second, then call backup? Or do you call backup first and hope neither runs away before you get a good look at them?