To create a new Instagram account while already having one, open the Instagram app and go to your profile. Tap your username at the top, then select “Add Account” > “Create New Account.” Choose a unique username and password, and follow the prompts to complete setup. Once created, you can easily switch between accounts by tapping your username and selecting the desired profile. Instagram allows up to five accounts per device, making it easy to manage personal, business, or niche profiles from one app. Remember to keep login details secure and assign separate emails for better account recovery options.