How can I add another form's table in the same tab?

how can i make them be in the same tab?

Unfortunately, it is not possible to merge two form's tables within the same tab. However, you may want to try adding a column which enables you to select data from another form within the same tab. Kindly check out feature #3 in the guide below:

https://www.jotform.com/blog/advanced-jotform-tables-features

If this looks like a possible alternative for you, do let us know if you need further assistance.