Employee attendance and salary entry ionic firestore

Need a small project / plug in for attendance and salary modules in ionic 3 firestore. Attendance - When I choose the department from a dropdwon, the respective list of staff members should be displayed with their emp id and name and also with the status present. We will change the status to absent for any absentees and we need to store in database with the option of storing the attachment (any type of file like pdf,word and etc). Salary - Need to list the employees with two text boxes to key in the basic and hra salary and submitted in to the database.