Deploy Bios settings to Windows domain computers

Dear All, I have created a muliplatform .exe with Dell Client Configuration Toolkit (CCTK) that I will deploy via a startup GPO to my Windows domain computers. I have two questions : 1 - I have a couple machines in UEFI and Legacy boot. Do I need to create one cctk file for UEFI and one for Legacy or the same cctk file can be used on both bios machines? 2 - Is there any issue on machines that already have the bios settings change when they receive the startup GPO every times they startup? In clear word, do I need to check at startup if for example the config password is enable on the machine, if yes set it up if no abort or bypass. Thks for your reply JJC