Log into the Backend side of your Joomla:

Navigate to the cACL. Once you have logged in, hover over the Components link on the top taskbar, scroll down to cACL:

When you have selected the cACL, you will be sent to the Access Menu Item that lists all Administrators.

Select an Administrator to restric (e.g. giangnt )

When you have selected the Administrator (giangnt), you will be sent to the cACL Control Access Level of this Administrator (giangnt):

Select Tab Component to set limitation of Components  you want

There are 3 options (Allow; Hide, Restrict). Default is allowed for all.

For this example, you only have allowed giangnt to manage Banners Component with its functions: Manage Banners and Contacts component with its functions: Manage Contacts but couldn't modify other Components and their functions.

After that, you could choose Save task to save and back the previous page and set up other administrator or choose Apply task to Save and continue setting other or Cancel task to cancel limitation 

The Result

Now access joomla backend with account giangnt to see the result:

The following screenshots shows you the end result of selecting limitative Components to administrator - giangnt . There some differences between before limiting and after limiting:

By default: giangnt could manage all Components  on the system

After limiting: giangnt could manage only 2 Components: Banners and Contacts collerrative with their attribute: