Open Instagram on a mobile device.
Tap your Profile Picture in the bottom right
Use the 3-line hamburger menu in the top right to go to the'Settings and Activity' page
Scroll down and select 'Account Type and Tools'
Select 'Switch to Professional Account'
Tap Next
Choose the option that best describes you
Tap 'Switch to Professional Account'
Tap 'OK'
Choose between 'Creator' or 'Business' (Real Estate Agents will likely choose 'Business'
Tap 'Next'
Choose whether or no you want to receive promotional Emails from Instagram
Tap 'Next'
Review your contact information and tap 'Next'
Connect your Facebook Account or skip this step
Consider the optional step of setting up some of Instagram's tools, or exit the menu to return to Instagram
Now you're done! For instruction on connecting your Facebook Business Page to a Professional Instagram Account, click here: How to Link facebook and Instagram