The Bot Lobby Tool: https://www.elitepvpers.com/forum/call-duty-trading/4679978-cod-mw-2019-unlocker-complete-daily-challenges-camo-weapon-unlocks-etc.html

Method to Invite friends:

After following all instructions provided with the tool:

1. Before you join a private match get everyone in your lobby that is going to partake in the bot lobby

2. Then join a custom game and wait untill everyone goes from loading to waiting on the top of the screen
    - If you want you can go ahead and adjust lobby settings as follows:
        - Set the map to Euphrates Bridge
        - Gamemode Search and Destroy
        - Health to 30, unlimited lives, game time unlimited, etc.
            - To make things easier save the mode as a custom game for easier lodding down the road.

3. Backout of the custom game, wait around 5 seconds then select quick match.

4. After clicking quick match tap f5 3 times then back out.

5. Load custom game make sure everyone is on the same team, if you have auto select it will kick you.
    - You are also going to need to setup your bots,
        - 2 people = 3 friendly 5 enemy
        - 3 people = 2 friendly 5 enemy
        - 4 people = 1 friendly 5 enemy
            -ETC...

6. Going back to step 2 make sure that everyone has waiting and not loading.

7. Start the game and wait untill everyones names in the lobby change color corresponding to there team click F5. "THIS IS CRUCIAL ITS ALL TIMING"

8. After the game has started and everyone is in you can go about your bot lobby, if you want to freeze all of the bots.
    - You as the host need to backout and choose leave without party members.

9. Your all done, enjoy your custom bot lobbys.