Try going to administration -> Forms -> Layouts
Click New Layout
Give it a Layout ID starting with LBF, fill out the other fields as appropriate, it’ll look something like this:
Add group to the new layout based form you just created.
Then add fields as appropriate.
It sounds like you’ll want to use a list box for the data type. You’ll need to select a list.
You can make your own in the list editor OR use the pre-existing procedure body sites, procedure lateralities list. You can edit them by going to Administration -> Forms -> Lists
Click encounter preview to take a look at how your form will look/work
Once you open an encounter for a patient, you can select your new form. It’s location may vary depending on what version of OpenEMR you’re running.