Automation enable "Chat External, Drive Sharing Outside, Sites Creation and Editing" for OU

My organization just switched to Google Workspace, I have created my organization's OUs in Workspace as follows:

Example:

khanhhoaedu(level 1)
|
--- school1(level 2)
|    |
|     ----- gv(level 3)
|     ----- it(level 3)
|     ----- sp(level 3)
--- school2(level 2)
|    |
|     ----- gv(level 3)
|     ----- it(level 3)
|     ----- sp(level 3)
--- school3(level 2)
|    |
|     ----- gv(level 3)
|     ----- it(level 3)
|     ----- sp(level 3)
---- district1(level 2)
|    |
|     ----- school4(level 3)
|            |
|             ----- gv(level 4)
|             ----- it(level 4)
|             ----- sp(level 4)
|    |
|     ----- school5(level 3)
|            |
|             ----- gv(level 4)
|             ----- it(level 4)
|             ----- sp(level 4)
---- district2(level 2)
|    |
|     ----- school6(level 3)
|            |
|             ----- gv(level 4)
|             ----- it(level 4)
|             ----- sp(level 4)
|    |
|     ----- school7(level 3)
|            |
|             ----- gv(level 4)
|             ----- it(level 4)
|             ----- sp(level 4)

Right now, I want turn on these services for all OU “gv(level 3) and gv(level 4)”

Since there are so many OUs that need to be turned on, I would like to ask if there is a way to automate this?

I tried to learn about Google App Script to automate this, but I am a Network Administrator, and studying programming languages takes time for me.