Please do not assign tickets to one person -- the IT Support team has multiple people and they pick up tickets based on their personal availability.
If you aren't comfortable with Jira, you can ask for IT Support help in the #hr-onboarding-for-hiring-managers Slack channel.
Create Jira ticket (Link)
Set to "Task"
"Sprint Ready"
Add description of the help you need
Add the label "IT-Support"