To add an ally in All the Mons , the most likely method is the same FTB Teams flow used in All the Mods packs: open My Teams → Manage Allies → select your friend → Accept. A Reddit report also says the command /ftbteams party allies add <username> worked when the menu did not.

If it does not work

  • Make sure the land or claimed chunks belong to the team , not an individual player.
  • Check the server’s claim/ally settings if you have access, because one report says a server setting was forcing ally changes off.
  • Try the command version instead of the GUI: /ftbteams party allies add <username>.

Quick note

All the Mons is a modpack built around All the Mods 10 with Cobblemon integrated, so team and claim features usually come from the pack’s mod systems rather than Cobblemon itself.

In plain steps

  1. Open your team menu.
  2. Go to ally management.
  3. Add your friend’s username.
  4. Accept the change.
  5. If it fails, use the command and check server claim settings.

If you want, I can also give you the exact steps for server owners versus regular players.