With Recon Drone, by default you'll need the "Recon Drone Dispenser" to be able to launch it. Make sure you add it to the player's inventory via the arsenal or scripting, or place the item somewhere in the world, such as inside a crate or vehicle. The dispenser is quite bulky, similar to a medkit or toolkit. You can also toggle this requeriment off in the addon options.

To add the Recon Drone Dispenser to the player's inventory (as long as it has space for it) you could use this:
or just add it in the Arsenal (in the "Items" tab).

To add the Recon Drone Dispenser to a vehicle or other storage you can use something like this:
or just add it in the editor (in the "Scopes" tab).

Finally, you can now place the dispenser anywhere in the world. You can find the item in the Items tab of the editor, category "Equipment", then "Inventory Items".