PHP POS Interface Overhaul

I'm looking for a skilled PHP developer to help me modify the user interface of my PHP POS web application. The changes will specifically target the dashboard layout, the navigation menu, and the report pages. Ideal Skills and Experience: - Extensive knowledge and experience in PHP and web application development - Strong skills in user interface design - Previous experience modifying POS systems highly preferred Please note that the specific changes are: Modifications in Existing PHP web application: - Date and time should be taken by default PC settings - In payment type (Cash received option) should have decimal option to enter and an button to fill full amount of the invoice amount - Bug fixing: Default POS screen shows payment by cash, debit card, credit card and online option. but if an item is selected, only cash and debit card shows, this needs to be fixed. - In debit card, there is no option to choose the amount received, this needs to be fixed. - the sales invoice print format to be fixed such as increase font size, the QR code sixe to the increased and should be clear to scan after printing. and should fit in the print 80mm print format. - the web application should be compatible and suitable with mobiles, tab and desktop screens - create a master user to give privilege for other users to view edit or delete other windows of the pos application The developer will need to work closely with me to identify the necessary modifications.