You can customize and update the Assist AI bot's display name in your Slack workspace by following these steps: 

• Open your Slack Workspace → Apps → Assist AI

• Right-click on Assist AI 

• Click on View app details

• Then click on Configuration

• This will take you to the app's Slack directory page

• Scroll down to the Bot user module and click on the Edit next to the Bot user

• You can rename the bot here

• Click Save changes

• You will now be able to see the updated name for the bot in your Slack workspace. 

Note: The changes might take about 30 mins to reflect in the Home tab of Assist AI.