How can employee or manager change checkin 's name?

Hi all,

For our client we need to we need the employee or manager to be able to enter a check-in name. How is this possible?
I saw that with mass loading it is possible to give a different name at check-in but when this is scheduled by the employee or manager (not massively) there is no field to enter the name. Does anyone know how to do this and can help me please?

Thank you,

Anamaria