Solution 1: Create a Rollout and push it to the device (For only Fresh install)
- Create a New Rollout using Rollout Wizard.
- Go to Global Settings -> Rollouts -> Right click on right pane
- Choose Create Rollout wizard

- Choose Configure MyApps option.

- Click next until User Interface and Reboot Management.

- Click Next and assign the target and now onwards you're all device do not have agent icon in system tray by using this install rollout..
- Done.
How to turn off the Systemtray icon on Existing devices.
- Create an Operational Rule.
- Add steps called ' Agent Parameter Setup '
- Update the Setting called 'Icon Mode in SysTray to HIDDEN

- Also add another step to reflect the changes immediately : Restart Agent.
- Assign the rule to devices where the the System Tray icon has to be hidden.
Solution 2 for Blocking Myapps User Interface completely:
- Create a new operational rule.
- Add step called " Agent Interface Access configuration"
Set options as follows:

- Add steps called ' Agent Parameter Setup '
- Check the checkbox next to the 'Icon Mode in SysTray' option and set the combo box to 'HIDDEN'

- Add the 'Restart Agent' step to reflect the changes on the end points.
- Assign to the devices or device group where the System Tray icon has to be hidden.