Trained in soft skills, the stewards would be deployed in all the 13 blocks of the stadium, which is slated to host 10 World Cup matches including the October 28 final.
A total of 120 of the stewards would be women, Bidhannagar Police Commissioner Gyanwant Singh told media persons.
The stewards, chosen from various units of the police, would be in plain clothes at the stadium, also called as Vivekananda Yuba Bharati Krirangan.
"The 400 stewards have been selected from our different units. There will be 30 or more stewards in each of the blocks. They will usher in the spectators from the gate to their seats, and look after the safety and security of the spectators," said Gyanwant Singh.
In case of any untoward incident, like if a spectator makes any racial comment, the steward would try to dissuade him politely.
"If their pleas fall on deaf ears, then the police will step in to tackle the situation the hard way," he said.
The stewards will also play the primary role in leading the spectators from their seats to the gates if the need arises to carry out any emergency evacuation of the stadium.
Gyanwant Singh said the police were in touch with the world football's governing body FIFA with regard to the security arrangements.
"They are the organisers of the event. So we are in regular touch with them," he said.
The FIFA regulations provide for appointment of stewards -- employed, hired, contracted or volunteering -- during its tournaments to assist in the "management of safety and security of spectators, VIPs/VVIPs, players, offi cials and any other person at the stadium, excluding those persons solely responsible for the security of designated individuals and member".
With football supporters of the city lapping up tickets for the 10 games which will be held at the Salt Lake Stadium, including the final, all tickets for these matches were marked "sold out" in red on the FIFA website.
Tickets for the matches in Kolkata were priced at Rs 480, Rs 960 and Rs 1,920.
The local organising committee's (LoC) tournament director Javier Ceppi had said that the first phase tickets will be limited and if all were sold out they would put up more on sale.
Spanish World Cup winner and former FC Barcelona skipper Carles Puyol kickstarted the ticket sales on Tuesday as it went live on FIFA website at 19:11 hours, in a tribute to Mohun Bagan icons who in the same year had become the first Indian club to defeat an English side (East Yorkshire Regiment) in the IFA Shield final.
The 85,000-capacity Salt Lake stadium will also host one round 16 game, one quarterfinal, the third place playoff and the final besides six Group F matches.
Having blanked 0-3 by USA in their U-17 World Cup opener, India put up an impressive display to equalise against Colombia, but conceded in the very next minute to dash hopes of securing their first point in a FIFA tournament.
"It was obvious that they played adaptive game in the first match but they were amazing against Colombia. They were very organised, tactically and physically well-prepared," Ujevic told reporters in a group league review news conference at the Salt Lake Stadium.
"They created a few scoring chances and were so enthusiastic and emotional jumping in joy after scoring the goal that they forgot to protect the goal in the next Colombian attack.
"Atmosphere was incredible. I hope they will learn a lot from this type of games otherwise it's difficult to take a look into the future."
"I give credit to the Indian people. For some games while going to stadium, I felt like I'm coming to Santiago, Old Trafford because of so many enthusiastic people who really enjoy football," he added.
Ujevic was particularly impressed with India's only goalscorer Jeakson Singh and custodian Dheeraj Singh, who was outstanding with his bold saves under the bar.
"In Indian team, you have two very nice midfield players and also the goalkeeper. The guy (Jeakson) who is just 16 years old and put his footpirnt in history of Indian football with his first ever goal for India. He's only 16 and that would stay will in history books forever.
"This was the best possible learning tool for India U-17 team. Obviously, physically and tactically, they were well prepared with the big influence of Indian coach (Luis Norton de Matos)."
"Talking about individual approach, there were over excitement during games... There's a lot of space to improve.
They deserve this World Cup. They really showed a great commitment."
In his first FIFA tournament as head of technical study group, Ujevic said: "It's obvious from the group stage that teams had come well prepared. Teams showed different styles of play, depending on their confederation.
"Based on technical aspects, we could say the best 16 teams qualified for knock-out round. It would really be interesting to see how they're prepared for the knockout stage. It's a very very interesting line-up in round 16."
"In general, there has been a plenty of enjoyable matches during group stage. It's really fantastic football atmosphere, outstanding individual players," he said summing up his experience so far.
He also gave credit to the coaches and refused to elaborate much on the negative sides, saying such things were normal in a developmental tournaments.
"The technical stuff they adapted going ahead was interesting. They were doing some interesting changes during the games. As tournament goes to the final round I hope it will be much more better and excitement."
"You have always some positive and non-positive impacts in a development tournament. Here you're talking about 16 year old boys... They were doing some amazing things as well as incredible individual mistakes, it's all part of the development.
"We should give them an opportunity to grow as footballers. We have to arrange everything for the next tournament and make them ready for future," he concluded.
The turnout for the Bangladesh game, unprecedented for national team matches in the country, left everyone impressed with India head coach and Croatia's 1998 World Cup bronze medallist Igor Stimac saying that it will remain in his memory forever.
On Thursday, sources told IANS that the Indian Football Association (IFA), which is the parent body for the sport in West Bengal, has spoken to All India Football Federation (AIFF) about hosting the tie in the City of Joy.
Besides Kolkata, Kerala and Bhubaneswar are also in the race.
"The IFA is expected to send a formal letter to AIFF on Friday. Stimac is also interested to play in front of such an amazing crowd. It's too early to say that Kolkata is the front runner but chances are there," a well-placed source said.
"I have been part of many big games. But this one was special," Stimac had said after the game.
India captain and record goalscorer Sunil Chhetri had expressed gratitude to the fans who turned up in large numbers to support the team, saying they could not deliver a performance to match the atmosphere.
"We couldn't deliver a performance to match the atmosphere at the Salt Lake last night, and the dressing room is very disappointed about it. We couldn't capitalise on the chances we got, but this is a process on the pitch and in the stands. You turned up, we'll keep attempting to," Chhetri had tweeted.
India has two points after three matches in the qualifiers and sits in the fourth spot in the five-team group.