-How to make the suspects surrender?

Use the action "Yell for compliance" or use the lock target button (default: T) to call a surrender while aiming at they. though they can be non compliant and resist.

-What to do if the suspect/civilian don't surrender?

For suspects, you can shoot at their legs or arms to cause pain and will reduce the moral, use Gas grenades (white smoke) or one of the vanila non-lethal explosives grenades, taser will also reduce their moral
For civilians, you can use the "Force to comply" action and you will hit they reducing the moral the Gas, non-lethal grenades and taser are also a good option since shoot at a civilian will reduce the team overall score.

-How is the score system?

Unauthorized use of force = -10 (Kill a suspects that did not have shooted or is aiming at you or your team)
authorized use of force = +10 (Kill a suspects that have shooted after 5 seconds or is aiming at you or your team)
Incapacitated a suspect = +10 (About the same as above but the suspect survived the wounds)
Arrest suspect = +10
Injured a civilian = -5 (either the suspects or officers)

-Why do I get a task when I arrest a suspect or secure a civilian?

That is a random reward.
Arresting a suspect in Rapid deployment can give away a bomb position.
Arresting a suspect in Hostage rescue can give away a VIP position.
Secure a civilian in any mode can give a position of another civilian.

-What are the game modes?

Barricaded suspects is a simple arrest/secure mode, your objective is to arrest all suspects and secure all civilians.
Hostage rescue is a stealth type of mode, if suspects spot you for 5 seconds and did not surrendered or got arrested they will start a demand timer and in 2 minutes they will walk on the VIP position and kill him, you objective is arrest all suspects and if your stealth is blow, secure the VIP position.
Rapid deployment is a bomb defuse mission, your team have 5 minutes to defuse all bombs, then arrest all suspects and secure all civilians.

-Why we need to worry about secure evidences?

Because the suspects have a random possibility of try to resist if they are not arrested, they will get up and search for a weapon near him, if they do resist you will have o yell for compliance again.

-Why use the toolkit?

The toolkit is to use the mirror and defuse bombs faster.

-Is there a limits for my cuffs?

No, they are unlimited.

-Is there a way to end the mission?

Yes, the mission is persistent but you can end it on your trophy rack once you get all 12 gold trophy.

-How to get a gold trophy?

Get a score of 100 or above in the end of the mission, getting non negative score is the way to go.

-Why 12 if there is 4 missions?

Is one trophy for each mission difficulty and mission.

-Were I can change my weapons?

At any black APC or MRAP in the Mission or the one at the base.

-How I can heal my self?

There is no medics, but you can heal your self to 100% at a ambulance near the mission, there is always one near and when the mission ends you get healed once teleport back to base.
also, your team can use the medikit to fully heal but there is no revive.

-There will be AI team mates in this mission?

No, this mission is intended for coop play, also the AI teamates would not work right with the missions objectives and scripts.
The only AI team mates you have is the sniper team (Sierra 1 and Sierra 2) they shoot automatically when a suspect in their line of sight fire their weapons(You can change they to never fire by taking control of they and use the action).

-How to take control of the snipers?

You must have equipped a UAV terminal [NATO] and take the control like a normal UAV

-There will be more missions?

Not on the workshop but maybe in this scenario.

-Were did you take the inspiration to make this mission?

On SWAT 4 game and the hype for its sucessor release Ready or Not, may mechanics and gameplay concepts were copy from it.

-Were are those sounds from?

From the SWAT 4 game and its expansion stetchkov syndicate

-There will be a plot or a remake of the SWAT 4 campaign?

No, I even tried to think at something but its just does not work and i think is better that way. Fell free to role-play as you want though.

-The AI clips trough walls/doors in this mission

Yes, I am aware of that, though nothing I can do about it, that is a Arma 3 problem.

-Can you add ACE suport?

I can't, i dont know how ACE works, right now the problems I have with it is that its broke my events handles and score system, the tase (4-five) do damage instead of only tase the target, the non-lethal grenades became lethal and some animations get buggy, you can even play it but there will be no way to get 100% and finish the mission, go for it if you wanna do roleplay only.

-Can I put your mission in my server?

Sure.

-How?

I don't know.