If an onboarding step is completed it will create a new row in Supabase for the onboarding_rewards table to keep track of the tasks the user has completed. There is no limit on the amount of steps that can be added to the onboarding. Though, I recommend to keep it between 3-4 steps. It’s recommended to just look at the onboarding-checklist.tsx and change some values in the onboarding.config.ts to see how the component will change. 
export const onboardingConfig = {
    title: "Getting Started",
    description: "Finish all onboarding tasks to earn an extra",
    bonusReward: {
        amount: 25,
        unit: "tokens",
    },
    tasks: [
        {
            id: "upload-demo",
            title: "Upload a Product Demo",
            description: "Upload a product demo to get started",
            reward: {
                amount: 2,
                unit: "tokens",
            },
            action: {
                label: "Upload Demo",
                href: "/app/product-demos",
            },
            completionCheck: {
                field: "uploadedProductDemos",
                target: 1,
            },
        },
        {
            id: "invite-friends",
            title: "Invite 5 Friends",
            description: "Invite friends to join the platform",
            reward: {
                amount: 15,
                unit: "tokens per referral",
            },
            action: {
                label: "Invite 5 Friends",
                href: "/app/refer",
            },
            completionCheck: {
                field: "referralCount",
                target: 5,
            },
            multipleSteps: 5, // used if a user needs to complete multiple steps to get the reward, e.g. referring multiple friends
            disableRewardForMultipleSteps: true,
        },
    ],
} as const satisfies OnboardingConfig; // uses satisfies as we otherwise can't use as const type assertion
You can then pass down the values for the completionCheck.field we declared in our onboarding.config.ts which will then check if the condition has been met. 
<OnboardingChecklistTrigger
    userProgress={{ uploadedProductDemos: productDemos.length, referralCount: referrals.length }}
    config={onboardingConfig}
    onClaimBonus={...}
    isClaimingBonus={...}
/>