Delhi

This is dependent on your job criterion.
Different jobs require different qualifications.
So clear, what you want to do.
Then find out how you can do that.

You can do it in Delhi University especially in Motilal Nehru College and Ram Lal College.

List of top 5 architecture colleges in Delhi-NCR according to the 2018 rankings are mentioned below:
1) School of Planning and Architecture - [SPA], New Delhi
2) Sushant School of Art and Architecture - [SSAA], Gurgaon
3) Jamia Millia Islamia University- [JMI], New Delhi
4) Vastu Kala Academy, New Delhi
5) Noida International University - [NIU], Gautam Budh Nagar
Regards.

Please refer to the link provided below for a list of all courses offered by Delhi Paramedical and Management Institute. You should be able to navigate to a course of your choice using the filters on the web page.
Regards.
https://www.shiksha.com/college/delhi-paramedical-and-management-institute-delhi-other-52607

In BVIMR admissions for MBA go till 220-230 rank. However I suggest you to sit in the counselling process.
IMED Pune is also a good option, as it has good rankings & placements.

Yes, you can apply for the KDCET for B.Tech lateral entry.

There is no such special procedural requirement. Just contact and apply in the college of your choice, fulfill their criteria and take admission.