Are the check boxes bound to a field in a table?
If so, code the Click event of a command button:

Dim strSQL as String
strSQL = "Update MyTable Set MyTable.[CheckField1] =
True,MyTable.[CheckField2] = True;"
CurrentDb.Execute strSQL, dbFailOnError

Change MyTable and CheckField to whatever the actual table and field names
are. Add additional check box field names, as needed.

If the check boxes are NOT bound to a field in a table, then:

Me![CheckBox1] = True
Me![CheckBox2] = True
etc.

Use the Click event of a command button

   With Me
       .chkBox1 = True
       .chkBox9 = True
       .chkBox12 = True
   End With