Testing your mission
Once you have everything set up properly, you need to check for any issues in your mission. Simply boot up your mission and go down the testing checklist.
Once you make sure everything is looking good, it's time to upload your mission to the server so others can test it too.
Before exporting your mission go into your mission folder and find the cleanup.bat file. Activate this and it will delete unused files to clear up space in your mission.
Next, in order to covert your mission into a file the server can use, go to Scenario > Export > Export to Multiplayer.
This will create a .pbo file in C:\Program Files (x86)\Steam\SteamApps\common\Arma 3\MPMissions. Please note that this is the MPMissions in your normal ARMA 3 installation, not in your documents. This .pbo file is your entire mission.
To upload your mission to the server jump on our Teamspeak server, right click the ARMA 3 channel and select Open File Browser.
When the file browser opens up, hit the upload button(the one with the arrow pointing upwards) to upload your file.
After you make sure your mission got on the server correctly, make a post about it on the Finished Missions forum.
After two people have testing your mission and have signed off on the thread for it, post your mission on our mission list and it's ready for play!
A list of commands to set the server up for testing can be found here.
Or simply type "#vote admin (yourname)" to give yourself admin powers, and then type "#missions" to pull up the mission select screen.