Mendeley automatically formats authors name in the Last, First format (e.g., Jane Doe --> Doe, Jane). This is a problem when citing institutional authors. For example, if you need to cite the Substance Abuse and Mental Health Services Administration Mendeley will automatically format it as "Aministration, Substance Abuse and Mental Health Services". Awkward.
Luckily, the solution to this is quick (but not readily obvious). See below:
Step 1: Start typing in the institution's name in the author field
Step 2: Notice after the text it says "Institution/Organization"
Step 3: When you are finished typing in the institution's name, click on the first option in the drop down menu. (*Important: DO NOT press enter!)