Newbie question on admin_level

Good day all! Nice to meet you.

I’m a beginner in this field. How can I link admin_level 9 to admin_level 8 in a spreadsheet so that I can link it to my list of polling stations? I already searched it on the Internet but I found the information not specific. Please help me.

Thank you a lot in advance for your information.

Thank you all for the recommendations, we will definitely look at the proposals at our leisure.