Location Customization for Attendance Portal

I am seeking a developer to help manage location reporting for an online attendance portal ([https://agriculture.aiframs.com/login](https://agriculture.aiframs.com/login)). Currently, the system captures my live GPS coordinates, which is problematic when I am working remotely or stationed at a different site (e.g., in Khuzdar while my job record is in Quetta).

The Goal:
I need a reliable way to manually select or customize my reported location before clocking in. The solution should allow me to switch between specific preset coordinates or enter custom latitude/longitude values that the website will recognize as my "current" position.

Specific Requirements:

Customization: I must be able to change the location at will (e.g., a toggle or a dropdown for different cities).

Browser Integration: The solution should work within standard browsers (Chrome, Edge, or mobile browsers).

Persistence: The "custom location" must remain active and stable during the entire login and attendance process.

Simplicity: I am looking for a user-friendly way to do this (e.g., a browser extension, a custom script, or a specific mobile setup).