It is better to test the pool and task suites settings in the sandbox, and then transfer them to the Toloka production version (see Workflow).
To create a pool with main tasks and control tasks:
Prepare the data for tasks.
If the tasks have images, they need to be available in the internet. For example, they can be stored on Yandex.Disk.
Click Add pool on the project page.
Set the pool parameters and click Save.
Load a TSV file with tasks.
Click Upload on the pool page and choose a method to split the pool into task suites:
By empty row.
Set task suites in the TSV file. After each taskk suite in TSV file, add an empty line.
Define the number of tasks in a task suite. Task suites will be formed from the tasks in the order they are placed in the TSV file.
Specify how many tasks of each type should be in a task suite. For example, 10 main tasks and one control task. Tasks will be distributed in the specified proportion. Users will not get repeated tasks.
To see what the tasks look like, click Preview.
To send tasks out for completion, click on the pool page.