Hello Ishika! Don't worry, you can easily apply for BBA- General. There is just a little bit of confusion about the admission process. Actually  Symbiosis International (Deemed University) allow the candidates to register for two papers. Therefore you can choose two papers from the morning and evening slot together.
Morning slot: ( 9:30am- 12 noon)
1) Symbiosis Law Admission Test (SLAT)
2) Symbiosis Entrance Exam for Design (SEED)
Evening slot: ( 2:30pm- 5:00pm)
1) SIT Engineering Entrance Exam (SITEEE)
2) Symbiosis Entrance Test- General (SIT- General)
According to the official website of SIU, candidates may appear in two papers. And they will have to register for one paper from morning session, and/or one from evening session.
So you don't have to fill the morning slot, incase you are not willing to give exam in law or design.
Furthermore, the admission process is as follows:
• After the successful registration on the official website.
Please note some important points
1) The closing date of registration is 15th April 2019, therefore, no requests for correction will be entertained after the closing date/ or after the payment of Entrance fee, i.e., ₹1750 for each test.
2) Also SET 2019 is just the first step, every symbiosis institute has a different selection process.
• Mode of Payment
1) BillDesk payment gateway
2) Easebuss Payment gateway
3) Indian Bank Payment gateway
4) Demand Draft
If you are paying through a Demand Draft, then submit it from any nationalised bank in favour of 'Symbiosis Test Secretariat'  payable at Pune.
Once you choose DD payment in 'Make Payment' tab,  take a print out of payment advice form. Fill in the DD details, sign and send it along with the DD to:
SYMBIOSIS TEST SECRETARIAT
SYMBIOSIS INTERNATIONAL (DEEMED UNIVERSITY)
Gram: Lavale, Tal: Mulshi, Dist.: Pune – 412115
Phone: 020-28116226/ 27.
Note: Fees is non-refundable and non-transferable.
You will get your admit card for SET BBA by April 20, 2019.
If you want to know more about the application process, and further details of the entrance exam, download the SET bulletin from the official website link:
https://www.set-test.org/?utm_source=careers360&utm_medium=Display&utm_placement=placement&utm_campaign=Display-careers360
All the best!
I hope this helps.