When you connect your Assembly identity manager with Office 365, you get all sorts of added benefits:
It's very simply to connect your Google G Suite with Assembly. Please be sure you do have Google admin permissions in order to access the directory. That is required. Assuming you have the necessary access to set up, you can proceed by following these instructions:
Be sure that you choose the correct Office 365 account to authenticate and from there, follow the remaining few steps to import the correct team members and you're good to go.