Multiple Ringing Extentions

I don’t know if this is possible, but what I am looking to do is have three extensions in a call group, have two ring and the same time and then on the third or fourth ring have the other extension ring. Is this possible?

Make 2 ring groups. Place the first 2 phone in ring group 1 and have it fail over to the second ring group which has all 3 of the extensions.