A family of Microsoft relational database management systems designed for ease of use.
You'll find an example of a dialogue form with controls, including combo boxes, referenced by a query as parameters in MultiSelect.zip in my public databases folder at:
https://onedrive.live.com/?cid=44CC60D7FEA42912&id=44CC60D7FEA42912!169
Note that if you are using an earlier version of Access you might find that the colour of some form objects such as buttons shows incorrectly and you will need to amend the form design accordingly.
If you have difficulty opening the link copy its text (NB, not the link location) and paste it into your browser's address bar.
In this little demo file the button to 'Restrict Report's Underlying Query on One or More Fields' is the appropriate example for what you wish to do. In the demo the button opens a report based on the query, but could equally well open a form or the query itself.