Like what status? You usually don't have a choice. Are you married and want to compare Joint to MFS?
To compare Joint to MFS. If you are using the Online version, do NOT change anything on your return. You would have to start with a new account and do a test return. You don't have to pay unless you want to print it out. So you might need 3 accounts, one for Joint and two MFS, one for each spouse.
How to Compare Joint to Married Filing Separately
How to start another return in the Online version
Please explain exactly what you are trying to do. Which two filing statuses are you trying to compare? We cannot answer unless we know what you are doing.