Configured Work Entry Types.
Set Working Schedules of employees. 
Added Salary Structure Types and Salary Structure.
Added Salary Rule Parameters for the employees.
Configured Payslip Other Input Types.
Added Salary Attachment Types.
Exploring Approvals Module in Odoo 17.
Set up of Approvers in Approval Modules
R&D done in Runbot and then Implemented the Approval Module
Error solved about the request not being approved by the approver in the module.
Configured Approvals Types.
Configured new request of approval in the module.