The 32-bit operating system can only run 32-bit applications, so the technician should execute the 32-bit installer. The "x86" in the file name refers to the 32-bit architecture.
https://www.digitaltrends.com/computing/32-bit-vs-64-bit-operating-systems/

To create a secondary login with different permissions in Windows 10, the user should utilize the Accounts setting. Here are the steps to create a new user account with different permissions:
Right-click the Windows Start menu button.
Select Control Panel.
Select User Accounts.
Select Manage another account.
Select Add a new user in PC settings.
Use the Accounts dialog box to configure a new account.1

User Accounts is a Control Panel utility that allows the technician to manage user accounts and groups on a workstation1. The technician can use User Accounts to grant local administrative access to a user by adding the user to the Administrators group1. The Administrators group has full control over the workstation and can perform tasks such as installing software, changing system settings, and accessing all files.

The Ease of Access Center is a built-in utility in Windows that provides tools and options for making a computer easier to use for individuals with disabilities, including the visually impaired. In the Ease of Access Center, the technician can turn on options like high contrast display, screen magnification, and screen reader software to help the user better interact with the computer.

The technician should guide the user to update Windows through the built-in "Check for Updates" feature. This can be done by having the user click in the Search field, type "Check for Updates", and then press the Enter key. This will bring up the Windows Update function, which will search for any available updates and give the user the option to install them.