See if this helps:
Insert Record
To create a new record in a table, use the Insert Record card. This operation can be particularly useful when you need to store new information, such as a new user's details or a newly completed transaction. Here's how to do it:
1. Add the Insert Record card to the desired node
2. Select the table where you want to insert the record.
3. Define a value for each field. You can either define a value manually or use variables.
4. You're done, once the conversation goes through this card, the record will be created in the table.
https://botpress.com/docs/cloud/toolbox/table-cards/#insert-record