Simply put separate copies of Q2A in separate folders, e.g. example.com/in/ and example.com/us/
If you are using the same database for both, you'd need to set the table prefix in qa-config.php, for example "qa_in_" for India and "qa_us_" for USA. Alternately use a different database for each site (which might keep things a bit neater).
If you want to share the same user base across both sites then you can set the QA_MYSQL_USERS_PREFIX option in qa-config.php. Note that if you do this, you must use the same database for each Q2A.