Open Minecraft and sign in to your Microsoft account

Go to the Realms tab

Select the Realm you want to manage

Open the Realm settings

Choose Members or Players

Select Invite Player

Enter the player’s gamertag or username

Send the invitation

Have the player accept the invite from their Minecraft invitations or notifications

Make sure the player is using the same Minecraft edition as the Realm

Confirm the player is allowed to join based on your Realm settings