@Sulatha ji please feel free to post your query in this Litarian forum.
You can charge water both ways with VK.
1. Energy name 3 times and keep VK on bottle for 2 minut / 2 ltr.
2. Energy name 3 times and rotate 15 to 20 times upto 2 ltr.
Please also check these learning videos by Sir.
https://forum.litairian.com/discussion/98/few-learning-videos-of-vibbes-kada-vk#latest