To access Agents settings:

Go to Omnichannel panel settings, as shown below:

Settings appear, as shown below:

To assign a user the agent role:

1. Select the user from the drop-down, as shown below:

1. Hit Add.

1. The user has the Agent role now, as shown below:

To Search an agent by name:

Enter the agent’s name in the search bar, as shown below:

To remove a user from the agent's list:

To remove a user from the list of agents, hit remove, as shown below: