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If you don't want to be disturbed, you can set your phone to silent mode for a specified period of time. You can also choose that your phone should ring when you receive calls from certain contacts even though your phone is in silent mode. Follow these instructions to suppress calls and notifications.
Find "Blocking mode"
Turn on suppression of calls and notifications
Set period of time, go to 3b.
Select contacts, go to 3c.
3a - Turn suppression of certain functions on or off
Disable incoming calls
3b - Set period of time V Press Always to turn the function on or off.
Press the field next to From.
3c - Select contacts