Create a Power App as per the below specs

Please find the attachments with the rFields

Requester name (Static field, Name Should come from login user).

Order Number(Auto Generate serially for each order)

Branch (Provide Drop down for multiple branch selection,Default :Black Barne)

Branch Number (Drop down with numbers bind with the corresponding branch selected )

Branch and Branch number are dependent on each other.
Branch will be drop down, and branch number is associated drop down

Time (static field,current date and time should come)

Attachments – usually photos should be able to attach multiple photos and files in a single request

Description of the problem
Start date(should take date when Invoiced Raised)
End date(Final approval date should populate) – this is when ticket is closed
Total Cost
Approval Status (Approved or Rejected ,Default: Pending)

Functionality

For every request requestor can raise the ticket and should mention the priority as High,Low or Medium.
Invoice approval should be done by multiple levels in a hierarchical manner and status of the approval should be updated.
After approving the application the final level status should be reflected as Approved requirements