Run Phone Manager in home screen and setup access to authority on Permission manager and Protected apps.
1. Permission Manager setup
STEP 1. Run Phone Manager
STEP 2. Select Permission manager
STEP 3. Applications > Select Assistive Touch
STEP 4. Turn On Trust this application, APP auto-launch, Dropzone applications
2. Protected apps setup
STEP 1. Run Phone Manager
STEP 2. Phone Manager>Settings
STEP 3. Select Protected apps
STEP 4. Turn ON Assistive Touch