Employee Attendance System (Google Forms/Sheets)

I am looking for a freelancer who can design and implement a simple but robust employee attendance system using Google Forms and Google Sheets (no heavy software, preferably no-code / low-code).
Project Requirement
I want an attendance system where:
Multiple employees can mark attendance
Employees can select:
Check-In (reporting time)
Check-Out (log-off time)
System should automatically:
Record timestamp
Match check-in and check-out
Calculate daily working hours
There will be multiple employees
New employees may be added anytime without breaking the system
Data should be structured and clean in Google Sheets
Daily attendance sheet + calculation sheet required
Expected Features
One simple Google Form for all employees
Linked Google Sheet with:
Auto working hours calculation
Employee-wise and date-wise records
Error handling (missing check-out, duplicate entries, etc.)
Easy to use on mobile
Handover with basic explanation of working
Preferred Skills
Google Forms
Google Sheets (advanced formulas)
AppSheet (optional but a plus)
Experience with attendance / tracking systems
Deliverables
Working Google Form
Structured Google Sheet with formulas
Brief demo / explanation
Editable template for future use
Budget
Open to reasonable quotes.
Please share:
Similar work done (if any)
Estimated timeline
Your approach
Goal
A reliable, easy-to-use attendance system suitable for office/site staff, scalable for future growth.