LU entrance exam for BBA take place according to course or all students in one time
LU entrance exam are taken step by step from course to course. For your BBA course admission you can follow the link provided below to get the brochure for BBA admission 2021:
https://www.lkouniv.ac.in/pdf/admission-2021/bba_brochure_2021_final.pdf
The starting date for UG entrance examination form fill up is 9/03/2021 which will end in 20/03/2021 and for late fee payment you have to pay within 27/03/2021.
I hope this answer helps. All the very best for your future endeavors!