[VBA] Filtering Data from Excel worksheet

I have a excel data which is looking like the attachment image.

I want to add one function into the userform which can let the user to select and filtering the date according the age. Referring to the attachment userfrom (Two options: 25 - 29 years old and 30 years old and above)

Inside my data excel sheet, there are date of birth coloumn. Can anyone show me how should i write the command to filter according the age
(P/S: The D.O.B Column was format as Date and i have attach the excel file as well)
data.png
dobform.png


Thank you in advance

Thank for your reply. What keywords should i search for?
Can you give me the thread url?

Thank for your source. But i still don't know how to filtering the date

I face one of the problem which i don't know how to write a function that can filtering the date. i have a column that recorded the Date of Birth of Client.
I want to create a function that filter the client which is from 25 - 29 yrs old and 30 yrs old and above. I wish to create a userform which include the two option buttons (For 25-29yrs old and 30yrs old and above), after the user click a button of filtering, it will show the data either option1 or option2.

The data look below!
Name ContactNum D.O.B
client1 34343452 12/01/1986
client2 65748392 14/09/1970
client3 98765647 18/11/1988
client4 64738294 04/12/1965