If you are a group admin, you can add your contacts to your group new members. Before starting, make sure you have established contact on Session with the person you want to add (you've messaged them on Session, and they've accepted your message request). That way, you can be sure they'll appear in your contacts list.
If you are not a group admin, you'll need to ask your group admin to add someone on your behalf, making sure the admin also has that user in their contacts.
iOS
1. Open the group.
2. Tap the gear icon (⚙️) in the top-right corner.
3. Select "Manage Members".
4. Tap "Invite Contacts".
5. Choose the contact(s) you want to add.
6. Confirm your selection.
Android
1. Open the group
2. Tap the three dots (⋮) in the top-right corner (Android).
3. Select "Manage Members".
4. Tap "Invite Contacts".
5. Choose the contact(s) you want to add.
6. Confirm your selection.
Desktop
1. Open the group
2. Click the group icons in the top-right corner to open group settings.
3. Select Invite Contacts
4. Select the contact(s) you want to add.
5. Click "Okay" to confirm.