I am not sure how to reach the basecamp.
Most of our treks have pick-up points at central locations. They are places like the Dehradun railway station, NJP railway station, etc. All trekkers meet at this central location and drive to the base camp together. We’ll organise the transport. However, you will have to pay the driver directly.
You could even reach the base camp on your own if you wish to, as long as you make it on time.
For information on how to reach the pick–up point or the base camp, head over to the “Maps and getting there” section of your trek page. You’ll find all the details you need.
Here is an example for the Dayara Bugyal trek : https://www.indiahikes.com/dayara-bugyal-trek/#getting-there