Instructions say I can still file state electronically. Where is the file tab

Click on File on the left side of the online program screen.

Did you already efile federal from this account?  You can only efile state if the federal was first efiled and accepted.  

How to efile state after federal
https://ttlc.intuit.com/community/e-file/help/how-do-i-e-file-my-state-after-i-already-filed-my-federal/00/26811