I think you can only submit one form at a time. But there is a solution.
Make your whole page one big form that submits to a particular action.
For each “sub-form” make a button with a unique name. tags or <input type=button name="little_form_1>.
You don’t use submit tags for this.
For the entire form make a button with a unique name.
In the action that will process the form you will make a if else
The above syntax may be a bit suspect but I’ve used something like
this before. I think it is nice an clean. I’ve found that it is best
if forms submit their data back to the same action that created the
form. This makes life easier. It also helps a lot with validation and