Increase Sorting Amount of Data Displayed CRM.

Hi, we are currently running on a Php Framework CRM with Mysql database, Our CRM currently allows us to short 5/20/or 100 results additionally it allows a load more option which technically we could keep pressing and it would ultimately display all our leads, we either need a 1000k sort per time with 1000 load more,. or a quick method of selecting all of the leads in our crm/db table . CRM system to be modified is bitrix24 on-premise business edition.