@sayyar Assuming the Salesforce data source has been established by your tenant administrator, these are the steps: 1) go to the Library 2) click + Import 3) from the list of data sources choose the Salesforce data source 4) choose what you want to import, you may: 4a) import a Salesforce object (like, Account) 4b) import a Salesforce report (scroll all the way to the bottom of the list of object and click on "Reports" 4c) import the results of a SOQL query - click on the "Create Query" link and paste/write your SOQL 5) once you have selected the desired Object/Report/Query, click finish
If your tenant admin has not established the Salesforce data source, the first two minutes of this video addresses that part of the process.