# Reviewing submissions and rewards
# Reviewing submissions and rewards
This guide covers how to set up rewards and approve submissions via the API.
When creating the study, set the reward for completing the task. Read [our guide here](https://researcher-help.prolific.com/en/article/8d9da9) on how to decide on a reward amount.
For a participant to be paid, their submission needs to be approved. There are 3 ways to approve a submission:
## Option 1: Automatic approval
When the participant completes the task, redirect them to Prolific with the completion code:
```
https://app.prolific.com/submissions/complete?cc={completion code}
```
See our [integration
guide](https://researcher-help.prolific.com/en/articles/445179-survey-software-integration-guides) for various
survey tools.
Participants will then be automatically paid once they complete the submission.
## Option 2: Manual review
When the participant completes the task, redirect them to Prolific with the completion code:
```
https://app.prolific.com/submissions/complete?cc={completion code}
```
See our [integration
guide](https://researcher-help.prolific.com/en/articles/445179-survey-software-integration-guides) for various
survey tools.
When a participant is sent to the survey tool, their submission ID will be in the URL parameters from Step 1. Use
this submission ID to approve the submission.
## Option 3: Bulk approval
If you prefer to manually review submissions, and are likely to review a large number of submissions at once, use the bulk approval endpoint to prevent being rate limited.
When the participant completes the task, redirect them to Prolific with the completion code:
```
https://app.prolific.com/submissions/complete?cc={completion code}
```
See our [integration
guide](https://researcher-help.prolific.com/en/articles/445179-survey-software-integration-guides) for various
survey tools.
When participants are sent to the survey tool, their submission IDs will be in the URL parameters from Step 1. Use
these submission IDs to approve the submissions in bulk.
* Before you publish a study, make sure you have enough funds in your account to approve the required number of submissions. Check out our [Workspace
balance & adding money](https://researcher-help.prolific.com/en/articles/445246-workspace-balance) guide to learn
more.
* Any submissions Awaiting Review 21 days after completion will be auto-approved.