Change caliper – electric parking brake?

Hello together. I have already asked in the Insignia Forum but hope to get some answers here. I have to change my brake calipers in the back soon due to defective cuffs. My Insignia has the electric parking brake – is there something specific to consider when changing? Do I just have to “release” the hand brake before changing (by pressing the switch) and just hang it out and mount it again with the new one or are there any problems? whole also just hang out at the rear of the caliper or is special tool necessary? Thank you in advance.