Dropbox With Checkbox Inside ?

I have a small program I am building for my boss to keep track of workers at certain job sites. With the way the economy is going my boss wants to track who is showing up at specific sites (jobs) and try to even it out among all the employees - some are not working full time... Anyway, I have two Access tables linked together with the main table being Employee Data. The second Table is Employee Jobs. Basically I have three forms. The main form on startup will show all of the employees in the company - this is basically a list of all added employees into the database (the second form comes up when you click on "ADD" - adding employee info).

My third form will be a form that basically pulls in the database info for the employee and drops all the employee names into a list box. I see in the tools section you can have a list box with check boxes next to the listed items. The form will basically be a form where job info will be saved to the database - like which job number, location etc. Instead of having to click on each employee that was at the same job and enter the information individually I would like a pull down box (with the check boxes next to each name) and then click on the employees that were at the job. Then hit save and basically all of the same job info will get saved to only the employees whose names were checked.

I am not sure how to go about doing this. some code snippets? Or explain how checking all the different names will cause the same work info to be saved to each each employees profile in the Access database?