To find an intersection of two streets on your LAMA map, you can use the Location Finder tool on the Map Toolbar. It looks like a satellite dish with a question mark on top:
That will open the Specify Location form. Begin typing the first street name in the text box below Street, Block, or Intersection - LAMA will start to try to autocomplete with matching street names from GIS.
Next go to Intersection with Street. In this drop-down box, only streets that actually intersect with the first street will be available to select:
IMPORTANT NOTE: Complete your search by clicking the green arrow in the Intersection with Street text box, or by using the Enter key on your keyboard. Do not use the OK button on the form.