Whilst you’re at your hero selection screen, click on Game Settings (as shown below)…
Then change the game type from Private Game to Public Game, choose the sort of content you want to do, i.e. Bounties, Rifts, Greater Rifts, and click Join Game (as shown below)…
The difficulty at which you can join Public games depends on your solo GR clearances (as shown below)…
| To Access Public Group | Solo GR completion Required |
|---|---|
| Normal | No requirement |
| Hard | No requirement |
| Expert | No requirement |
| Master | No requirement |
| Torment I-VI | No requirement |
| Torment VII | Solo Greater Rift 30 |
| Torment VIII | Solo Greater Rift 35 |
| Torment IX | Solo Greater Rift 40 |
| Torment X | Solo Greater Rift 45 |
| Torment XI | Solo Greater Rift 50 |
| Torment XII | Solo Greater Rift 55 |
| Torment XIII | Solo Greater Rift 60 |
| Torment XIV | Solo Greater Rift 65 |
| Torment XV | Solo Greater Rift 70 |
| Torment XVI | Solo Greater Rift 75 |