T48U BLF show line status for selected users

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Hello,

Customer asked me about ability to show BLF line status only for selected users (on Yealink T48U screen), AND BLF line status should not been shown on other (not selected) users IP Phone screen (Yealink T48U). Phones are conected to 3CX.

Current status:
Each user can assign the function of the DSS button on the IP Phone screen in such a way that he has the ability to add a BLF button.

This results BLF in showing line status (e.g. busy, free, ringing) of any subscriber.

Anticipation:
The above functionality works only for a specific group of users. [not see line status on every user]

Please let me know is it possible to achieve such functionality and how ?
Is it possible to block selecting BLF by loading Template ?