I lined up F 1 for my relatives in America. Can I change teams?

This is the American immigration schedule I found in June, 5438+00:

All over the world (including Hong Kong, Macao and Taiwan) Chinese mainland, India, Mexico and the Philippines.

First priority 02 April 15 02 April 15 02 April 15 02 September 08 92 April 0 1 93.

The second priority is 2A04010104010401010/0/kloc-0.

065438+2004 10 month

The second priority is 2B99 65438+February1599 65438+February1599 65438+February 15 92 April 22 May 08, 97.

Third priority: June 22, 2000 June 22, 2000 September 15, 91May 0 1

The fourth priority is 65438+971October 22nd 0 1 May 7th, May 22nd, 95 065438+1May 6th.

Can be changed. The above is the current schedule date. It started in 2005 and will be delayed for about 2 years.