How do cards work in indoor hockey?

FIH Rules of Indoor Hockey, Rule 14 (2027). Suspensions indoors are shorter than outdoors. A player or team official may be:

Under the 2027 rules:

• You shouldn't get two green or two yellow cards in the same match, even for different offences. After any personal penalty, your next carded offence must get a higher card. Cards for a team offence given to the captain don't count.
• Team officials can be carded too, and the team then plays a player short.
• Misconduct while suspended earns a higher card.

While suspended: sit in the designated place, and don't coach, shout or do team duties. The suspension starts when you're seated. You may rejoin the team at a quarter or half-time interval, then go back to finish it. Your team plays one player short throughout. A red card means leaving the field and its surrounds, and your team is a player short for the rest of the match.