Adapting animated 1 RIG for mail - femail mesh /different proportions/

Hi need to use 1 rig with animations to a mail and femail mesh the problem is that they got different proportions especially in area from shoulder to fingers. Can somebody point me somwear how can i approach it and not mess up the animations?. Should i modify the rig in a specific way ? od should i make different new rig? Im working in Blender and exporting the rig and animations to UE.

Google ‘UE4 retarget same skeleton’.