Here is new stupid link https://proconnect.intuit.com/community/form-1040/help/individual-california-single-member-llc-frequ...
It is not real clear, but you can do multiple. The key is tagging that they are SMLLC at the bottom of the screen for the activity. Look for a check box in Other Information. Schedules C, E and F.
Here's wishing you many Happy Returns
