1- Download and install Tacview:
https://www.tacview.net/download/latest/en/

2- Download all the zip files in this googledrive link (around 59 files, you can download them at once in a singles zip file, click on the title on download). Those are the supported map textures (missions will be properly recorded on other maps, but they can won't show as beautiful on Tacview):
https://drive.google.com/drive/folders/1aXDR-UuWUXuVr3aux_CNbsoqjsZeiT14

3- Extract the content of those files in the folder %ProgramData%\Tacview\

4- Subscribe to the addon "Tacview Recorder" on the Client (not on the server, it is only clientside):
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=2754878041
5- Load the addon "Tacview Recorder" and "CBA-A3" on Arma 3 (and any other mods you need to join your server), and joint the server you want to play.

6- Press ESC key, click on Options, click on Addon options, go to tab Client, and select from the list "Tacview Recorder". Set your output folder for the recordings (ACMI files, eg. D:\tacviewarma3), untick "Output debug information", tick "Allow remoteExec" and tick "Record Projectiles". Press OK to all and return to game.

7- Press ESC key, Configure controls, Configure addons, select from the list "Tacview Recorder" and configure the shortcuts (eg. "Check wether running" as Ctrl+Alt+A , "Start recording" as Ctrl+Alt+S and "Stop Recording" as Ctrl+Alt+D). When playing, those are the controls to generate the recording file to review after using Tacview. No need to be admin for that, any client can do it. Make any record, stop it, and close the game.

8- Open Tacview, click on Options/Terrain/ and select ARMA. Click on Options/Terrain/ Display Mode and click 3D & Underwater. Click on Options/Terrain/ and tick "Custom textures". Click on Addons, Enable/Disable Addons and activate "Arma 3 Tools". Click on Addons/Arma 3 Tools/ and tick "Remove AI Units callsigns", on Addons/Arma 3 Tools/Map markers tick "No". DO NOT TICK "Display statistics overlay" and "Display scoreboard" unless needed, as it makes the interface VERY laggy. Close Tacview.

9- Now you can open any ACMI file with Tacview, configure it to your liking as it has lot of options and features to analyze your mission.

10- One last thing. If the mission edit has lots of markers, they are exported as well, and this can be very annoying. An easy way to remove them is to open the ACMI with any text editor (like Notepad++), the use the Replace function and replace the string "Name=Marker" with nothing. I mean, deleting all those strings in the file.

-IMPORTANT: Some textures like Altis map are very high resolution files that could take up to one minute to load, so be patience when opening an ACMI file and leave it enough time to load it properly.

-IMPORTANT: This addon is not very resource intensive, but it is a waste of network, server and client resources to run more than one instance of it. So coordinate with the other players to only record it one person, and the send the recorded ACMI to the others.