Customers - Timesheet - Calender

Customers - Timesheet - Calender

* Sorry moved this to the Zoho Creator Forum 

Hi, 

I'm trying to make an app where a user can see an appointment schedule (the user has a customer permission) for his workweek or month. The customer can only see his schedule. So far so good. But i want to make a timesheet where the user can add the real time spended during that appointment. 

Forms/Reports that i made are: 

- Customer
- Employee (in this form i have a User field with customer permissions)
- Appointments (in this form i have a lookup to Customer and a lookup to Employee) 
      This has a report with Outlook Calendar Style.

The employee can see his calender and appointments this works. 
Now i would like to make a button so when the employee clicks on the appointment he can add the worked hours specific for that customer that day. 

When i make a form for WorkedHours the employee now can select all Customers so this doesn't work

Thanks for reading this (and sorry for my poor English :))
Could you help me out ? Or give a heads up

Thanks !!!!