Switching between 7.2 and 5.2.2

[GueroX4]

I'm a noob and sorry if this has been covered already. I recently upgraded to the Sony str-dn1080. I plan on getting some atmos speakers soon but want to keep the option to run 7.2 also. Both the atmos and back surrounds use the same terminals on the receiver. What options are there besides switching the speaker wires. Thought about getting a speaker selector but not sure how those work or if there's a better option. Thanks in advance