you should use data validation
first select the range of cells where you want to apply the list bo
options to select the data from drop down list.
then go to Data > Validation under setting tab > Allow (select List)
then in source put the range of cells where list of employees' names i
(you must have list of employee names in your worksheet or workbook)
it is better to give Name to your employees' names list. you can d
this by going to Insert > Name > Define (type "employees" withou
quotes and in refers to select range where employees name resides an
press Ok)
now in data validation under setting tab > Allow (select List), then i
source put =employees and ok.
now when you select the cell on which you have applied data validatio
to put the data, a drop down button will appear, you can select any o
employee name from that list.
hope this would help you.