BaQqGmTk

11. Download and install obs-WebSocket plugin from https://github.com/Palakis/obs-websocket/releases
22.Open OBS
33. Go to Tools and if the plugin is installed correctly you can choose "Websocket server settings" from the list.
44. Enable authentication and type a password that you gonna type in config file later. (Other options are fine by default)
55. Go to OBSKeys\Config and open config file(with notepad) 
6Do not edit anything on the left, just the data between "".
7
8Edit 'secretpassword' to whatever password you typed in settings
9GitHub
10Palakis/obs-WebSocket
11WebSockets API for OBS Studio. Contribute to Palakis/obs-WebSocket development by creating an account on GitHub.
12
13ONE PC SETUP:
14
15{
16  "IP Adress. Default: 127.0.0.1": "127.0.0.1",
17  "Port. Default: 4444": "4444",
18  "Password from your OBS websocket plugin": "secretpassword",
19  "Key to pause the application": 117,
20  "Delay after releasing key": 300,
21  "KeysSetup": {
22    "G": "Image"
23  }
24}
25GitHub
26Palakis/obs-websocket
27WebSockets API for OBS Studio. Contribute to Palakis/obs-websocket development by creating an account on GitHub.
28
29If you have dual pc setup you need to type your local IP from streaming pc instead of 1x.x.x.x and password.
30https://github.com/Palakis/obs-websocket/releases
31GitHub
32Palakis/obs-WebSocket
33WebSockets API for OBS Studio. Contribute to Palakis/obs-WebSocket development by creating an account on GitHub.
34
35DUAL PC SETUP:
36
37{
38  "IP Adress. Default: 127.0.0.1": "1x.x.x.x",
39  "Port. Default: 4444": "4444",
40  "Password from your OBS websocket plugin": "secretpassword",
41  "Key to pause the application": 117,
42  "Delay after releasing key": 300,
43  "KeysSetup": {
44    "G": "Image"
45  }
46}
47GitHub
48Palakis/obs-websocket
49WebSockets API for OBS Studio. Contribute to Palakis/obs-websocket development by creating an account on GitHub.
506. Add an image of your choice (I suggest something darker so it's not too bright for the eyes) to your SCENE in OBS and put it ABOVE game capture/capture card and call it Image
51(You can call it differently but you need to change 'Image' to the same name in the config file for example "G": "SecretMap"
527. Open the program(OBSKeys) and click connect
538. If you did everything correctly it should say:
54
55Connecting...
56Connected to OBS
57
589. If it didn't connect, you probably didn't do some of the steps correctly, you can ask me (hJune) if you have any problems
5910. By default if you hold G its gonna show Image you added on the scene and it will disappear 300ms(by default you can change it) after you gonna release key.
6011. Just a warning, if you press G consecutively, it might show your map on the second press. Make sure you don't press G too fast.(edited)
61If you guys are wondering about setting up the map overlay with a OBS plugin so it's seamless for twitch, here it is above
62https://cdn.discordapp.com/attachments/510333787029110785/528698908843573278/OBSKeys_1.zip